tmux(1) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | DEFAULT KEY BINDINGS | COMMAND PARSING AND EXECUTION | PARSING SYNTAX | COMMANDS | CLIENTS AND SESSIONS | WINDOWS AND PANES | KEY BINDINGS | OPTIONS | HOOKS | MOUSE SUPPORT | FORMATS | STYLES | NAMES AND TITLES | GLOBAL AND SESSION ENVIRONMENT | STATUS LINE | BUFFERS | MISCELLANEOUS | EXIT MESSAGES | TERMINFO EXTENSIONS | CONTROL MODE | ENVIRONMENT | FILES | EXAMPLES | SEE ALSO | AUTHORS | COLOPHON

TMUX(1)                BSD General Commands Manual               TMUX(1)

NAME         top

     tmux — terminal multiplexer

SYNOPSIS         top

     tmux [-2CDluvV] [-c shell-command] [-f file] [-L socket-name]
          [-S socket-path] [-T features] [command [flags]]

DESCRIPTION         top

     tmux is a terminal multiplexer: it enables a number of terminals to
     be created, accessed, and controlled from a single screen.  tmux
     may be detached from a screen and continue running in the
     background, then later reattached.

     When tmux is started it creates a new session with a single window
     and displays it on screen.  A status line at the bottom of the
     screen shows information on the current session and is used to
     enter interactive commands.

     A session is a single collection of pseudo terminals under the
     management of tmux.  Each session has one or more windows linked to
     it.  A window occupies the entire screen and may be split into
     rectangular panes, each of which is a separate pseudo terminal (the
     pty(4) manual page documents the technical details of pseudo
     terminals).  Any number of tmux instances may connect to the same
     session, and any number of windows may be present in the same
     session.  Once all sessions are killed, tmux exits.

     Each session is persistent and will survive accidental
     disconnection (such as ssh(1) connection timeout) or intentional
     detaching (with the ‘C-b d’ key strokes).  tmux may be reattached
     using:

           $ tmux attach

     In tmux, a session is displayed on screen by a client and all
     sessions are managed by a single server.  The server and each
     client are separate processes which communicate through a socket in
     /tmp.

     The options are as follows:

     -2            Force tmux to assume the terminal supports 256
                   colours.  This is equivalent to -T 256.

     -C            Start in control mode (see the CONTROL MODE section).
                   Given twice (-CC) disables echo.

     -c shell-command
                   Execute shell-command using the default shell.  If
                   necessary, the tmux server will be started to
                   retrieve the default-shell option.  This option is
                   for compatibility with sh(1) when tmux is used as a
                   login shell.

     -D            Do not start the tmux server as a daemon.  This also
                   turns the exit-empty option off.  With -D, command
                   may not be specified.

     -f file       Specify an alternative configuration file.  By
                   default, tmux loads the system configuration file
                   from @SYSCONFDIR@/tmux.conf, if present, then looks
                   for a user configuration file at ~/.tmux.conf.

                   The configuration file is a set of tmux commands
                   which are executed in sequence when the server is
                   first started.  tmux loads configuration files once
                   when the server process has started.  The source-file
                   command may be used to load a file later.

                   tmux shows any error messages from commands in
                   configuration files in the first session created, and
                   continues to process the rest of the configuration
                   file.

     -L socket-name
                   tmux stores the server socket in a directory under
                   TMUX_TMPDIR or /tmp if it is unset.  The default
                   socket is named default.  This option allows a
                   different socket name to be specified, allowing
                   several independent tmux servers to be run.  Unlike
                   -S a full path is not necessary: the sockets are all
                   created in a directory tmux-UID under the directory
                   given by TMUX_TMPDIR or in /tmp.  The tmux-UID
                   directory is created by tmux and must not be world
                   readable, writable or executable.

                   If the socket is accidentally removed, the SIGUSR1
                   signal may be sent to the tmux server process to
                   recreate it (note that this will fail if any parent
                   directories are missing).

     -l            Behave as a login shell.  This flag currently has no
                   effect and is for compatibility with other shells
                   when using tmux as a login shell.

     -N            Do not start the server even if the command would
                   normally do so (for example new-session or
                   start-server).

     -S socket-path
                   Specify a full alternative path to the server socket.
                   If -S is specified, the default socket directory is
                   not used and any -L flag is ignored.

     -u            Write UTF-8 output to the terminal even if the first
                   environment variable of LC_ALL, LC_CTYPE, or LANG
                   that is set does not contain "UTF-8" or "UTF8".  This
                   is equivalent to -T UTF-8.

     -T features   Set terminal features for the client.  This is a
                   comma-separated list of features.  See the
                   terminal-features option.

     -v            Request verbose logging.  Log messages will be saved
                   into tmux-client-PID.log and tmux-server-PID.log
                   files in the current directory, where PID is the PID
                   of the server or client process.  If -v is specified
                   twice, an additional tmux-out-PID.log file is
                   generated with a copy of everything tmux writes to
                   the terminal.

                   The SIGUSR2 signal may be sent to the tmux server
                   process to toggle logging between on (as if -v was
                   given) and off.

     -V            Report the tmux version.

     command [flags]
                   This specifies one of a set of commands used to
                   control tmux, as described in the following sections.
                   If no commands are specified, the new-session command
                   is assumed.

DEFAULT KEY BINDINGS         top

     tmux may be controlled from an attached client by using a key
     combination of a prefix key, ‘C-b’ (Ctrl-b) by default, followed by
     a command key.

     The default command key bindings are:

           C-b         Send the prefix key (C-b) through to the
                       application.
           C-o         Rotate the panes in the current window forwards.
           C-z         Suspend the tmux client.
           !           Break the current pane out of the window.
           "           Split the current pane into two, top and bottom.
           #           List all paste buffers.
           $           Rename the current session.
           %           Split the current pane into two, left and right.
           &           Kill the current window.
           '           Prompt for a window index to select.
           (           Switch the attached client to the previous
                       session.
           )           Switch the attached client to the next session.
           ,           Rename the current window.
           -           Delete the most recently copied buffer of text.
           .           Prompt for an index to move the current window.
           0 to 9      Select windows 0 to 9.
           :           Enter the tmux command prompt.
           ;           Move to the previously active pane.
           =           Choose which buffer to paste interactively from a
                       list.
           ?           List all key bindings.
           D           Choose a client to detach.
           L           Switch the attached client back to the last
                       session.
           [           Enter copy mode to copy text or view the history.
           ]           Paste the most recently copied buffer of text.
           c           Create a new window.
           d           Detach the current client.
           f           Prompt to search for text in open windows.
           i           Display some information about the current
                       window.
           l           Move to the previously selected window.
           m           Mark the current pane (see select-pane -m).
           M           Clear the marked pane.
           n           Change to the next window.
           o           Select the next pane in the current window.
           p           Change to the previous window.
           q           Briefly display pane indexes.
           r           Force redraw of the attached client.
           s           Select a new session for the attached client
                       interactively.
           t           Show the time.
           w           Choose the current window interactively.
           x           Kill the current pane.
           z           Toggle zoom state of the current pane.
           {           Swap the current pane with the previous pane.
           }           Swap the current pane with the next pane.
           ~           Show previous messages from tmux, if any.
           Page Up     Enter copy mode and scroll one page up.
           Up, Down
           Left, Right
                       Change to the pane above, below, to the left, or
                       to the right of the current pane.
           M-1 to M-5  Arrange panes in one of the five preset layouts:
                       even-horizontal, even-vertical, main-horizontal,
                       main-vertical, or tiled.
           Space       Arrange the current window in the next preset
                       layout.
           M-n         Move to the next window with a bell or activity
                       marker.
           M-o         Rotate the panes in the current window backwards.
           M-p         Move to the previous window with a bell or
                       activity marker.
           C-Up, C-Down
           C-Left, C-Right
                       Resize the current pane in steps of one cell.
           M-Up, M-Down
           M-Left, M-Right
                       Resize the current pane in steps of five cells.

     Key bindings may be changed with the bind-key and unbind-key
     commands.

COMMAND PARSING AND EXECUTION         top

     tmux supports a large number of commands which can be used to
     control its behaviour.  Each command is named and can accept zero
     or more flags and arguments.  They may be bound to a key with the
     bind-key command or run from the shell prompt, a shell script, a
     configuration file or the command prompt.  For example, the same
     set-option command run from the shell prompt, from ~/.tmux.conf and
     bound to a key may look like:

           $ tmux set-option -g status-style bg=cyan

           set-option -g status-style bg=cyan

           bind-key C set-option -g status-style bg=cyan

     Here, the command name is ‘set-option’, ‘-g’ is a flag and
     ‘status-style’ and ‘bg=cyan’ are arguments.

     tmux distinguishes between command parsing and execution.  In order
     to execute a command, tmux needs it to be split up into its name
     and arguments.  This is command parsing.  If a command is run from
     the shell, the shell parses it; from inside tmux or from a
     configuration file, tmux does.  Examples of when tmux parses
     commands are:

           -   in a configuration file;

           -   typed at the command prompt (see command-prompt);

           -   given to bind-key;

           -   passed as arguments to if-shell or confirm-before.

     To execute commands, each client has a ‘command queue’.  A global
     command queue not attached to any client is used on startup for
     configuration files like ~/.tmux.conf.  Parsed commands added to
     the queue are executed in order.  Some commands, like if-shell and
     confirm-before, parse their argument to create a new command which
     is inserted immediately after themselves.  This means that
     arguments can be parsed twice or more - once when the parent
     command (such as if-shell) is parsed and again when it parses and
     executes its command.  Commands like if-shell, run-shell and
     display-panes stop execution of subsequent commands on the queue
     until something happens - if-shell and run-shell until a shell
     command finishes and display-panes until a key is pressed.  For
     example, the following commands:

           new-session; new-window
           if-shell "true" "split-window"
           kill-session

     Will execute new-session, new-window, if-shell, the shell command
     true(1), split-window and kill-session in that order.

     The COMMANDS section lists the tmux commands and their arguments.

PARSING SYNTAX         top

     This section describes the syntax of commands parsed by tmux, for
     example in a configuration file or at the command prompt.  Note
     that when commands are entered into the shell, they are parsed by
     the shell - see for example ksh(1) or csh(1).

     Each command is terminated by a newline or a semicolon (;).
     Commands separated by semicolons together form a ‘command sequence’
     - if a command in the sequence encounters an error, no subsequent
     commands are executed.

     It is recommended that a semicolon used as a command separator
     should be written as an individual token, for example from sh(1):

           $ tmux neww \; splitw

     Or:

           $ tmux neww ';' splitw

     Or from the tmux command prompt:

           neww ; splitw

     However, a trailing semicolon is also interpreted as a command
     separator, for example in these sh(1) commands:

           $ tmux neww\\; splitw

     Or:

           $ tmux 'neww;' splitw

     As in these examples, when running tmux from the shell extra care
     must be taken to properly quote semicolons:

           1.   Semicolons that should be interpreted as a command
                separator should be escaped according to the shell
                conventions.  For sh(1) this typically means quoted
                (such as ‘neww ';' splitw’) or escaped (such as ‘neww
                \\\\; splitw’).

           2.   Individual semicolons or trailing semicolons that should
                be interpreted as arguments should be escaped twice:
                once according to the shell conventions and a second
                time for tmux; for example:

                      $ tmux neww 'foo\\;' bar
                      $ tmux neww foo\\\\; bar

           3.   Semicolons that are not individual tokens or trailing
                another token should only be escaped once according to
                shell conventions; for example:

                      $ tmux neww 'foo-;-bar'
                      $ tmux neww foo-\\;-bar

     Comments are marked by the unquoted # character - any remaining
     text after a comment is ignored until the end of the line.

     If the last character of a line is \, the line is joined with the
     following line (the \ and the newline are completely removed).
     This is called line continuation and applies both inside and
     outside quoted strings and in comments, but not inside braces.

     Command arguments may be specified as strings surrounded by single
     (') quotes, double quotes (") or braces ({}).  This is required
     when the argument contains any special character.  Single and
     double quoted strings cannot span multiple lines except with line
     continuation.  Braces can span multiple lines.

     Outside of quotes and inside double quotes, these replacements are
     performed:

           -   Environment variables preceded by $ are replaced with
               their value from the global environment (see the GLOBAL
               AND SESSION ENVIRONMENT section).

           -   A leading ~ or ~user is expanded to the home directory of
               the current or specified user.

           -   \uXXXX or \uXXXXXXXX is replaced by the Unicode codepoint
               corresponding to the given four or eight digit
               hexadecimal number.

           -   When preceded (escaped) by a \, the following characters
               are replaced: \e by the escape character; \r by a
               carriage return; \n by a newline; and \t by a tab.

           -   \ooo is replaced by a character of the octal value ooo.
               Three octal digits are required, for example \001.  The
               largest valid character is \377.

           -   Any other characters preceded by \ are replaced by
               themselves (that is, the \ is removed) and are not
               treated as having any special meaning - so for example \;
               will not mark a command sequence and \$ will not expand
               an environment variable.

     Braces are parsed as a configuration file (so conditions such as
     ‘%if’ are processed) and then converted into a string.  They are
     designed to avoid the need for additional escaping when passing a
     group of tmux commands as an argument (for example to if-shell).
     These two examples produce an identical command - note that no
     escaping is needed when using {}:

           if-shell true {
               display -p 'brace-dollar-foo: }$foo'
           }

           if-shell true "display -p 'brace-dollar-foo: }\$foo'"

     Braces may be enclosed inside braces, for example:

           bind x if-shell "true" {
               if-shell "true" {
                   display "true!"
               }
           }

     Environment variables may be set by using the syntax ‘name=value’,
     for example ‘HOME=/home/user’.  Variables set during parsing are
     added to the global environment.  A hidden variable may be set with
     ‘%hidden’, for example:

           %hidden MYVAR=42

     Hidden variables are not passed to the environment of processes
     created by tmux.  See the GLOBAL AND SESSION ENVIRONMENT section.

     Commands may be parsed conditionally by surrounding them with
     ‘%if’, ‘%elif’, ‘%else’ and ‘%endif’.  The argument to ‘%if’ and
     ‘%elif’ is expanded as a format (see FORMATS) and if it evaluates
     to false (zero or empty), subsequent text is ignored until the
     closing ‘%elif’, ‘%else’ or ‘%endif’.  For example:

           %if "#{==:#{host},myhost}"
           set -g status-style bg=red
           %elif "#{==:#{host},myotherhost}"
           set -g status-style bg=green
           %else
           set -g status-style bg=blue
           %endif

     Will change the status line to red if running on ‘myhost’, green if
     running on ‘myotherhost’, or blue if running on another host.
     Conditionals may be given on one line, for example:

           %if #{==:#{host},myhost} set -g status-style bg=red %endif

COMMANDS         top

     This section describes the commands supported by tmux.  Most
     commands accept the optional -t (and sometimes -s) argument with
     one of target-client, target-session, target-window, or
     target-pane.  These specify the client, session, window or pane
     which a command should affect.

     target-client should be the name of the client, typically the
     pty(4) file to which the client is connected, for example either of
     /dev/ttyp1 or ttyp1 for the client attached to /dev/ttyp1.  If no
     client is specified, tmux attempts to work out the client currently
     in use; if that fails, an error is reported.  Clients may be listed
     with the list-clients command.

     target-session is tried as, in order:

           1.   A session ID prefixed with a $.

           2.   An exact name of a session (as listed by the
                list-sessions command).

           3.   The start of a session name, for example ‘mysess’ would
                match a session named ‘mysession’.

           4.   An fnmatch(3) pattern which is matched against the
                session name.

     If the session name is prefixed with an ‘=’, only an exact match is
     accepted (so ‘=mysess’ will only match exactly ‘mysess’, not
     ‘mysession’).

     If a single session is found, it is used as the target session;
     multiple matches produce an error.  If a session is omitted, the
     current session is used if available; if no current session is
     available, the most recently used is chosen.

     target-window (or src-window or dst-window) specifies a window in
     the form session:window.  session follows the same rules as for
     target-session, and window is looked for in order as:

           1.   A special token, listed below.

           2.   A window index, for example ‘mysession:1’ is window 1 in
                session ‘mysession’.

           3.   A window ID, such as @1.

           4.   An exact window name, such as ‘mysession:mywindow’.

           5.   The start of a window name, such as ‘mysession:mywin’.

           6.   As an fnmatch(3) pattern matched against the window
                name.

     Like sessions, a ‘=’ prefix will do an exact match only.  An empty
     window name specifies the next unused index if appropriate (for
     example the new-window and link-window commands) otherwise the
     current window in session is chosen.

     The following special tokens are available to indicate particular
     windows.  Each has a single-character alternative form.

     Token              Meaning
     {start}       ^    The lowest-numbered window
     {end}         $    The highest-numbered window
     {last}        !    The last (previously current) window
     {next}        +    The next window by number
     {previous}    -    The previous window by number

     target-pane (or src-pane or dst-pane) may be a pane ID or takes a
     similar form to target-window but with the optional addition of a
     period followed by a pane index or pane ID, for example:
     ‘mysession:mywindow.1’.  If the pane index is omitted, the
     currently active pane in the specified window is used.  The
     following special tokens are available for the pane index:

     Token                  Meaning
     {last}            !    The last (previously active) pane
     {next}            +    The next pane by number
     {previous}        -    The previous pane by number
     {top}                  The top pane
     {bottom}               The bottom pane
     {left}                 The leftmost pane
     {right}                The rightmost pane
     {top-left}             The top-left pane
     {top-right}            The top-right pane
     {bottom-left}          The bottom-left pane
     {bottom-right}         The bottom-right pane
     {up-of}                The pane above the active pane
     {down-of}              The pane below the active pane
     {left-of}              The pane to the left of the active pane
     {right-of}             The pane to the right of the active pane

     The tokens ‘+’ and ‘-’ may be followed by an offset, for example:

           select-window -t:+2

     In addition, target-session, target-window or target-pane may
     consist entirely of the token ‘{mouse}’ (alternative form ‘=’) to
     specify the session, window or pane where the most recent mouse
     event occurred (see the MOUSE SUPPORT section) or ‘{marked}’
     (alternative form ‘~’) to specify the marked pane (see select-pane
     -m).

     Sessions, window and panes are each numbered with a unique ID;
     session IDs are prefixed with a ‘$’, windows with a ‘@’, and panes
     with a ‘%’.  These are unique and are unchanged for the life of the
     session, window or pane in the tmux server.  The pane ID is passed
     to the child process of the pane in the TMUX_PANE environment
     variable.  IDs may be displayed using the ‘session_id’,
     ‘window_id’, or ‘pane_id’ formats (see the FORMATS section) and the
     display-message, list-sessions, list-windows or list-panes
     commands.

     shell-command arguments are sh(1) commands.  This may be a single
     argument passed to the shell, for example:

           new-window 'vi ~/.tmux.conf'

     Will run:

           /bin/sh -c 'vi ~/.tmux.conf'

     Additionally, the new-window, new-session, split-window,
     respawn-window and respawn-pane commands allow shell-command to be
     given as multiple arguments and executed directly (without ‘sh
     -c’).  This can avoid issues with shell quoting.  For example:

           $ tmux new-window vi ~/.tmux.conf

     Will run vi(1) directly without invoking the shell.

     command [arguments] refers to a tmux command, either passed with
     the command and arguments separately, for example:

           bind-key F1 set-option status off

     Or passed as a single string argument in .tmux.conf, for example:

           bind-key F1 { set-option status off }

     Example tmux commands include:

           refresh-client -t/dev/ttyp2

           rename-session -tfirst newname

           set-option -wt:0 monitor-activity on

           new-window ; split-window -d

           bind-key R source-file ~/.tmux.conf \; \
                   display-message "source-file done"

     Or from sh(1):

           $ tmux kill-window -t :1

           $ tmux new-window \; split-window -d

           $ tmux new-session -d 'vi ~/.tmux.conf' \; split-window -d \; attach

CLIENTS AND SESSIONS         top

     The tmux server manages clients, sessions, windows and panes.
     Clients are attached to sessions to interact with them, either when
     they are created with the new-session command, or later with the
     attach-session command.  Each session has one or more windows
     linked into it.  Windows may be linked to multiple sessions and are
     made up of one or more panes, each of which contains a pseudo
     terminal.  Commands for creating, linking and otherwise
     manipulating windows are covered in the WINDOWS AND PANES section.

     The following commands are available to manage clients and
     sessions:

     attach-session [-dErx] [-c working-directory] [-f flags] [-t
             target-session]
                   (alias: attach)
             If run from outside tmux, create a new client in the
             current terminal and attach it to target-session.  If used
             from inside, switch the current client.  If -d is
             specified, any other clients attached to the session are
             detached.  If -x is given, send SIGHUP to the parent
             process of the client as well as detaching the client,
             typically causing it to exit.  -f sets a comma-separated
             list of client flags.  The flags are:

             active-pane
                     the client has an independent active pane

             ignore-size
                     the client does not affect the size of other
                     clients

             no-output
                     the client does not receive pane output in control
                     mode

             pause-after=seconds
                     output is paused once the pane is seconds behind in
                     control mode

             read-only
                     the client is read-only

             wait-exit
                     wait for an empty line input before exiting in
                     control mode

             A leading ‘!’ turns a flag off if the client is already
             attached.  -r is an alias for -f read-only,ignore-size.
             When a client is read-only, only keys bound to the
             detach-client or switch-client commands have any effect.  A
             client with the active-pane flag allows the active pane to
             be selected independently of the window's active pane used
             by clients without the flag.  This only affects the cursor
             position and commands issued from the client; other
             features such as hooks and styles continue to use the
             window's active pane.

             If no server is started, attach-session will attempt to
             start it; this will fail unless sessions are created in the
             configuration file.

             The target-session rules for attach-session are slightly
             adjusted: if tmux needs to select the most recently used
             session, it will prefer the most recently used unattached
             session.

             -c will set the session working directory (used for new
             windows) to working-directory.

             If -E is used, the update-environment option will not be
             applied.

     detach-client [-aP] [-E shell-command] [-s target-session] [-t
             target-client]
                   (alias: detach)
             Detach the current client if bound to a key, the client
             specified with -t, or all clients currently attached to the
             session specified by -s.  The -a option kills all but the
             client given with -t.  If -P is given, send SIGHUP to the
             parent process of the client, typically causing it to exit.
             With -E, run shell-command to replace the client.

     has-session [-t target-session]
                   (alias: has)
             Report an error and exit with 1 if the specified session
             does not exist.  If it does exist, exit with 0.

     kill-server
             Kill the tmux server and clients and destroy all sessions.

     kill-session [-aC] [-t target-session]
             Destroy the given session, closing any windows linked to it
             and no other sessions, and detaching all clients attached
             to it.  If -a is given, all sessions but the specified one
             is killed.  The -C flag clears alerts (bell, activity, or
             silence) in all windows linked to the session.

     list-clients [-F format] [-t target-session]
                   (alias: lsc)
             List all clients attached to the server.  For the meaning
             of the -F flag, see the FORMATS section.  If target-session
             is specified, list only clients connected to that session.

     list-commands [-F format] [command]
                   (alias: lscm)
             List the syntax of command or - if omitted - of all
             commands supported by tmux.

     list-sessions [-F format] [-f filter]
                   (alias: ls)
             List all sessions managed by the server.  -F specifies the
             format of each line and -f a filter.  Only sessions for
             which the filter is true are shown.  See the FORMATS
             section.

     lock-client [-t target-client]
                   (alias: lockc)
             Lock target-client, see the lock-server command.

     lock-session [-t target-session]
                   (alias: locks)
             Lock all clients attached to target-session.

     new-session [-AdDEPX] [-c start-directory] [-e environment] [-f
             flags] [-F format] [-n window-name] [-s session-name] [-t
             group-name] [-x width] [-y height] [shell-command]
                   (alias: new)
             Create a new session with name session-name.

             The new session is attached to the current terminal unless
             -d is given.  window-name and shell-command are the name of
             and shell command to execute in the initial window.  With
             -d, the initial size comes from the global default-size
             option; -x and -y can be used to specify a different size.
             ‘-’ uses the size of the current client if any.  If -x or
             -y is given, the default-size option is set for the
             session.  -f sets a comma-separated list of client flags
             (see attach-session).

             If run from a terminal, any termios(4) special characters
             are saved and used for new windows in the new session.

             The -A flag makes new-session behave like attach-session if
             session-name already exists; in this case, -D behaves like
             -d to attach-session, and -X behaves like -x to
             attach-session.

             If -t is given, it specifies a session group.  Sessions in
             the same group share the same set of windows - new windows
             are linked to all sessions in the group and any windows
             closed removed from all sessions.  The current and previous
             window and any session options remain independent and any
             session in a group may be killed without affecting the
             others.  The group-name argument may be:

             1.      the name of an existing group, in which case the
                     new session is added to that group;

             2.      the name of an existing session - the new session
                     is added to the same group as that session,
                     creating a new group if necessary;

             3.      the name for a new group containing only the new
                     session.

             -n and shell-command are invalid if -t is used.

             The -P option prints information about the new session
             after it has been created.  By default, it uses the format
             ‘#{session_name}:’ but a different format may be specified
             with -F.

             If -E is used, the update-environment option will not be
             applied.  -e takes the form ‘VARIABLE=value’ and sets an
             environment variable for the newly created session; it may
             be specified multiple times.

     refresh-client [-cDlLRSU] [-A pane:state] [-B name:what:format] [-C
             XxY] [-f flags] [-t target-client] [adjustment]
                   (alias: refresh)
             Refresh the current client if bound to a key, or a single
             client if one is given with -t.  If -S is specified, only
             update the client's status line.

             The -U, -D, -L -R, and -c flags allow the visible portion
             of a window which is larger than the client to be changed.
             -U moves the visible part up by adjustment rows and -D
             down, -L left by adjustment columns and -R right.  -c
             returns to tracking the cursor automatically.  If
             adjustment is omitted, 1 is used.  Note that the visible
             position is a property of the client not of the window,
             changing the current window in the attached session will
             reset it.

             -C sets the width and height of a control mode client.  -A
             allows a control mode client to trigger actions on a pane.
             The argument is a pane ID (with leading ‘%’), a colon, then
             one of ‘on’, ‘off’, ‘continue’ or ‘pause’.  If ‘off’, tmux
             will not send output from the pane to the client and if all
             clients have turned the pane off, will stop reading from
             the pane.  If ‘continue’, tmux will return to sending
             output to the pane if it was paused (manually or with the
             pause-after flag).  If ‘pause’, tmux will pause the pane.
             -A may be given multiple times for different panes.

             -B sets a subscription to a format for a control mode
             client.  The argument is split into three items by colons:
             name is a name for the subscription; what is a type of item
             to subscribe to; format is the format.  After a
             subscription is added, changes to the format are reported
             with the %subscription-changed notification, at most once a
             second.  If only the name is given, the subscription is
             removed.  what may be empty to check the format only for
             the attached session, or one of: a pane ID such as ‘%0’;
             ‘%*’ for all panes in the attached session; a window ID
             such as ‘@0’; or ‘@*’ for all windows in the attached
             session.

             -f sets a comma-separated list of client flags, see
             attach-session.

             -l requests the clipboard from the client using the
             xterm(1) escape sequence and stores it in a new paste
             buffer.

             -L, -R, -U and -D move the visible portion of the window
             left, right, up or down by adjustment, if the window is
             larger than the client.  -c resets so that the position
             follows the cursor.  See the window-size option.

     rename-session [-t target-session] new-name
                   (alias: rename)
             Rename the session to new-name.

     show-messages [-JT] [-t target-client]
                   (alias: showmsgs)
             Show server messages or information.  Messages are stored,
             up to a maximum of the limit set by the message-limit
             server option.  -J and -T show debugging information about
             jobs and terminals.

     source-file [-Fnqv] path ...
                   (alias: source)
             Execute commands from one or more files specified by path
             (which may be glob(7) patterns).  If -F is present, then
             path is expanded as a format.  If -q is given, no error
             will be returned if path does not exist.  With -n, the file
             is parsed but no commands are executed.  -v shows the
             parsed commands and line numbers if possible.

     start-server
                   (alias: start)
             Start the tmux server, if not already running, without
             creating any sessions.

             Note that as by default the tmux server will exit with no
             sessions, this is only useful if a session is created in
             ~/.tmux.conf, exit-empty is turned off, or another command
             is run as part of the same command sequence.  For example:

                   $ tmux start \; show -g

     suspend-client [-t target-client]
                   (alias: suspendc)
             Suspend a client by sending SIGTSTP (tty stop).

     switch-client [-ElnprZ] [-c target-client] [-t target-session] [-T
             key-table]
                   (alias: switchc)
             Switch the current session for client target-client to
             target-session.  As a special case, -t may refer to a pane
             (a target that contains ‘:’, ‘.’ or ‘%’), to change
             session, window and pane.  In that case, -Z keeps the
             window zoomed if it was zoomed.  If -l, -n or -p is used,
             the client is moved to the last, next or previous session
             respectively.  -r toggles the client read-only and
             ignore-size flags (see the attach-session command).

             If -E is used, update-environment option will not be
             applied.

             -T sets the client's key table; the next key from the
             client will be interpreted from key-table.  This may be
             used to configure multiple prefix keys, or to bind commands
             to sequences of keys.  For example, to make typing ‘abc’
             run the list-keys command:

                   bind-key -Ttable2 c list-keys
                   bind-key -Ttable1 b switch-client -Ttable2
                   bind-key -Troot   a switch-client -Ttable1

WINDOWS AND PANES         top

     Each window displayed by tmux may be split into one or more panes;
     each pane takes up a certain area of the display and is a separate
     terminal.  A window may be split into panes using the split-window
     command.  Windows may be split horizontally (with the -h flag) or
     vertically.  Panes may be resized with the resize-pane command
     (bound to ‘C-Up’, ‘C-Down’ ‘C-Left’ and ‘C-Right’ by default), the
     current pane may be changed with the select-pane command and the
     rotate-window and swap-pane commands may be used to swap panes
     without changing their position.  Panes are numbered beginning from
     zero in the order they are created.

     By default, a tmux pane permits direct access to the terminal
     contained in the pane.  A pane may also be put into one of several
     modes:

           -   Copy mode, which permits a section of a window or its
               history to be copied to a paste buffer for later
               insertion into another window.  This mode is entered with
               the copy-mode command, bound to ‘[’ by default.  Copied
               text can be pasted with the paste-buffer command, bound
               to ‘]’.

           -   View mode, which is like copy mode but is entered when a
               command that produces output, such as list-keys, is
               executed from a key binding.

           -   Choose mode, which allows an item to be chosen from a
               list.  This may be a client, a session or window or pane,
               or a buffer.  This mode is entered with the
               choose-buffer, choose-client and choose-tree commands.

     In copy mode an indicator is displayed in the top-right corner of
     the pane with the current position and the number of lines in the
     history.

     Commands are sent to copy mode using the -X flag to the send-keys
     command.  When a key is pressed, copy mode automatically uses one
     of two key tables, depending on the mode-keys option: copy-mode for
     emacs, or copy-mode-vi for vi.  Key tables may be viewed with the
     list-keys command.

     The following commands are supported in copy mode:

           Command                                      vi              emacs
           append-selection
           append-selection-and-cancel                  A
           back-to-indentation                          ^               M-m
           begin-selection                              Space           C-Space
           bottom-line                                  L
           cancel                                       q               Escape
           clear-selection                              Escape          C-g
           copy-end-of-line
                                                                                 [<prefix>]                  D               C-k
           copy-line [<prefix>]
           copy-pipe [<command>] [<prefix>]
           copy-pipe-no-clear [<command>] [<prefix>]
           copy-pipe-and-cancel [<command>] [<prefix>]
           copy-selection [<prefix>]
           copy-selection-no-clear [<prefix>]
           copy-selection-and-cancel
                                                                                 [<prefix>]         Enter           M-w
           cursor-down                                  j               Down
           cursor-down-and-cancel
           cursor-left                                  h               Left
           cursor-right                                 l               Right
           cursor-up                                    k               Up
           end-of-line                                  $               C-e
           goto-line
                                                                                 <line>                             :               g
           halfpage-down                                C-d             M-Down
           halfpage-down-and-cancel
           halfpage-up                                  C-u             M-Up
           history-bottom                               G               M->
           history-top                                  g               M-<
           jump-again                                   ;               ;
           jump-backward
                                                                                 <to>                           F               F
           jump-forward
                                                                                 <to>                            f               f
           jump-reverse                                 ,               ,
           jump-to-backward <to>                        T
           jump-to-forward <to>                         t
           jump-to-mark                                 M-x             M-x
           middle-line                                  M               M-r
           next-matching-bracket                        %               M-C-f
           next-paragraph                               }               M-}
           next-space                                   W
           next-space-end                               E
           next-word                                    w
           next-word-end                                e               M-f
           other-end                                    o
           page-down                                    C-f             PageDown
           page-down-and-cancel
           page-up                                      C-b             PageUp
           pipe [<command>] [<prefix>]
           pipe-no-clear [<command>] [<prefix>]
           pipe-and-cancel [<command>] [<prefix>]
           previous-matching-bracket                                    M-C-b
           previous-paragraph                           {               M-{
           previous-space                               B
           previous-word                                b               M-b
           rectangle-on
           rectangle-off
           rectangle-toggle                             v               R
           refresh-from-pane                            r               r
           scroll-down                                  C-e             C-Down
           scroll-down-and-cancel
           scroll-up                                    C-y             C-Up
           search-again                                 n               n
           search-backward <for>                        ?
           search-backward-incremental
                                                                                 <for>                            C-r
           search-backward-text <for>
           search-forward <for>                         /
           search-forward-incremental
                                                                                 <for>                             C-s
           search-forward-text <for>
           search-reverse                               N               N
           select-line                                  V
           select-word
           set-mark                                     X               X
           start-of-line                                0               C-a
           stop-selection
           top-line                                     H               M-R

     The search commands come in several varieties: ‘search-forward’ and
     ‘search-backward’ search for a regular expression; the ‘-text’
     variants search for a plain text string rather than a regular
     expression; ‘-incremental’ perform an incremental search and expect
     to be used with the -i flag to the command-prompt command.
     ‘search-again’ repeats the last search and ‘search-reverse’ does
     the same but reverses the direction (forward becomes backward and
     backward becomes forward).

     Copy commands may take an optional buffer prefix argument which is
     used to generate the buffer name (the default is ‘buffer’ so
     buffers are named ‘buffer0’, ‘buffer1’ and so on).  Pipe commands
     take a command argument which is the command to which the selected
     text is piped.  ‘copy-pipe’ variants also copy the selection.  The
     ‘-and-cancel’ variants of some commands exit copy mode after they
     have completed (for copy commands) or when the cursor reaches the
     bottom (for scrolling commands).  ‘-no-clear’ variants do not clear
     the selection.

     The next and previous word keys skip over whitespace and treat
     consecutive runs of either word separators or other letters as
     words.  Word separators can be customized with the word-separators
     session option.  Next word moves to the start of the next word,
     next word end to the end of the next word and previous word to the
     start of the previous word.  The three next and previous space keys
     work similarly but use a space alone as the word separator.
     Setting word-separators to the empty string makes next/previous
     word equivalent to next/previous space.

     The jump commands enable quick movement within a line.  For
     instance, typing ‘f’ followed by ‘/’ will move the cursor to the
     next ‘/’ character on the current line.  A ‘;’ will then jump to
     the next occurrence.

     Commands in copy mode may be prefaced by an optional repeat count.
     With vi key bindings, a prefix is entered using the number keys;
     with emacs, the Alt (meta) key and a number begins prefix entry.

     The synopsis for the copy-mode command is:

     copy-mode [-eHMqu] [-s src-pane] [-t target-pane]
             Enter copy mode.  The -u option scrolls one page up.  -M
             begins a mouse drag (only valid if bound to a mouse key
             binding, see MOUSE SUPPORT).  -H hides the position
             indicator in the top right.  -q cancels copy mode and any
             other modes.  -s copies from src-pane instead of
             target-pane.

             -e specifies that scrolling to the bottom of the history
             (to the visible screen) should exit copy mode.  While in
             copy mode, pressing a key other than those used for
             scrolling will disable this behaviour.  This is intended to
             allow fast scrolling through a pane's history, for example
             with:

                   bind PageUp copy-mode -eu

     A number of preset arrangements of panes are available, these are
     called layouts.  These may be selected with the select-layout
     command or cycled with next-layout (bound to ‘Space’ by default);
     once a layout is chosen, panes within it may be moved and resized
     as normal.

     The following layouts are supported:

     even-horizontal
             Panes are spread out evenly from left to right across the
             window.

     even-vertical
             Panes are spread evenly from top to bottom.

     main-horizontal
             A large (main) pane is shown at the top of the window and
             the remaining panes are spread from left to right in the
             leftover space at the bottom.  Use the main-pane-height
             window option to specify the height of the top pane.

     main-vertical
             Similar to main-horizontal but the large pane is placed on
             the left and the others spread from top to bottom along the
             right.  See the main-pane-width window option.

     tiled   Panes are spread out as evenly as possible over the window
             in both rows and columns.

     In addition, select-layout may be used to apply a previously used
     layout - the list-windows command displays the layout of each
     window in a form suitable for use with select-layout.  For example:

           $ tmux list-windows
           0: ksh [159x48]
               layout: bb62,159x48,0,0{79x48,0,0,79x48,80,0}
           $ tmux select-layout bb62,159x48,0,0{79x48,0,0,79x48,80,0}

     tmux automatically adjusts the size of the layout for the current
     window size.  Note that a layout cannot be applied to a window with
     more panes than that from which the layout was originally defined.

     Commands related to windows and panes are as follows:

     break-pane [-abdP] [-F format] [-n window-name] [-s src-pane] [-t
             dst-window]
                   (alias: breakp)
             Break src-pane off from its containing window to make it
             the only pane in dst-window.  With -a or -b, the window is
             moved to the next index after or before (existing windows
             are moved if necessary).  If -d is given, the new window
             does not become the current window.  The -P option prints
             information about the new window after it has been created.
             By default, it uses the format
             ‘#{session_name}:#{window_index}.#{pane_index}’ but a
             different format may be specified with -F.

     capture-pane [-aepPqCJN] [-b buffer-name] [-E end-line] [-S
             start-line] [-t target-pane]
                   (alias: capturep)
             Capture the contents of a pane.  If -p is given, the output
             goes to stdout, otherwise to the buffer specified with -b
             or a new buffer if omitted.  If -a is given, the alternate
             screen is used, and the history is not accessible.  If no
             alternate screen exists, an error will be returned unless
             -q is given.  If -e is given, the output includes escape
             sequences for text and background attributes.  -C also
             escapes non-printable characters as octal \xxx.  -N
             preserves trailing spaces at each line's end and -J
             preserves trailing spaces and joins any wrapped lines.  -P
             captures only any output that the pane has received that is
             the beginning of an as-yet incomplete escape sequence.

             -S and -E specify the starting and ending line numbers,
             zero is the first line of the visible pane and negative
             numbers are lines in the history.  ‘-’ to -S is the start
             of the history and to -E the end of the visible pane.  The
             default is to capture only the visible contents of the
             pane.

     choose-client [-NrZ] [-F format] [-f filter] [-K key-format] [-O
             sort-order] [-t target-pane] [template]
             Put a pane into client mode, allowing a client to be
             selected interactively from a list.  Each client is shown
             on one line.  A shortcut key is shown on the left in
             brackets allowing for immediate choice, or the list may be
             navigated and an item chosen or otherwise manipulated using
             the keys below.  -Z zooms the pane.  The following keys may
             be used in client mode:

                   Key    Function
                   Enter  Choose selected client
                   Up     Select previous client
                   Down   Select next client
                   C-s    Search by name
                   n      Repeat last search
                   t      Toggle if client is tagged
                   T      Tag no clients
                   C-t    Tag all clients
                   d      Detach selected client
                   D      Detach tagged clients
                   x      Detach and HUP selected client
                   X      Detach and HUP tagged clients
                   z      Suspend selected client
                   Z      Suspend tagged clients
                   f      Enter a format to filter items
                   O      Change sort field
                   r      Reverse sort order
                   v      Toggle preview
                   q      Exit mode

             After a client is chosen, ‘%%’ is replaced by the client
             name in template and the result executed as a command.  If
             template is not given, "detach-client -t '%%'" is used.

             -O specifies the initial sort field: one of ‘name’, ‘size’,
             ‘creation’, or ‘activity’.  -r reverses the sort order.  -f
             specifies an initial filter: the filter is a format - if it
             evaluates to zero, the item in the list is not shown,
             otherwise it is shown.  If a filter would lead to an empty
             list, it is ignored.  -F specifies the format for each item
             in the list and -K a format for each shortcut key; both are
             evaluated once for each line.  -N starts without the
             preview.  This command works only if at least one client is
             attached.

     choose-tree [-GNrswZ] [-F format] [-f filter] [-K key-format] [-O
             sort-order] [-t target-pane] [template]
             Put a pane into tree mode, where a session, window or pane
             may be chosen interactively from a tree.  Each session,
             window or pane is shown on one line.  A shortcut key is
             shown on the left in brackets allowing for immediate
             choice, or the tree may be navigated and an item chosen or
             otherwise manipulated using the keys below.  -s starts with
             sessions collapsed and -w with windows collapsed.  -Z zooms
             the pane.  The following keys may be used in tree mode:

                   Key    Function
                   Enter  Choose selected item
                   Up     Select previous item
                   Down   Select next item
                   +      Expand selected item
                   -      Collapse selected item
                   M-+    Expand all items
                   M--    Collapse all items
                   x      Kill selected item
                   X      Kill tagged items
                   <      Scroll list of previews left
                   >      Scroll list of previews right
                   C-s    Search by name
                   m      Set the marked pane
                   M      Clear the marked pane
                   n      Repeat last search
                   t      Toggle if item is tagged
                   T      Tag no items
                   C-t    Tag all items
                   :      Run a command for each tagged item
                   f      Enter a format to filter items
                   H      Jump to the starting pane
                   O      Change sort field
                   r      Reverse sort order
                   v      Toggle preview
                   q      Exit mode

             After a session, window or pane is chosen, the first
             instance of ‘%%’ and all instances of ‘%1’ are replaced by
             the target in template and the result executed as a
             command.  If template is not given, "switch-client -t '%%'"
             is used.

             -O specifies the initial sort field: one of ‘index’,
             ‘name’, or ‘time’.  -r reverses the sort order.  -f
             specifies an initial filter: the filter is a format - if it
             evaluates to zero, the item in the list is not shown,
             otherwise it is shown.  If a filter would lead to an empty
             list, it is ignored.  -F specifies the format for each item
             in the tree and -K a format for each shortcut key; both are
             evaluated once for each line.  -N starts without the
             preview.  -G includes all sessions in any session groups in
             the tree rather than only the first.  This command works
             only if at least one client is attached.

     customize-mode [-NZ] [-F format] [-f filter] [-t target-pane]
             [template]
             Put a pane into customize mode, where options and key
             bindings may be browsed and modified from a list.  Option
             values in the list are shown for the active pane in the
             current window.  -Z zooms the pane.  The following keys may
             be used in customize mode:

                   Key    Function
                   Enter  Set pane, window, session or global option
                                      value
                   Up     Select previous item
                   Down   Select next item
                   +      Expand selected item
                   -      Collapse selected item
                   M-+    Expand all items
                   M--    Collapse all items
                   s      Set option value or key attribute
                   S      Set global option value
                   w      Set window option value, if option is for pane
                                      and window
                   d      Set an option or key to the default
                   D      Set tagged options and tagged keys to the
                                      default
                   u      Unset an option (set to default value if
                                      global) or unbind a key
                   U      Unset tagged options and unbind tagged keys
                   C-s    Search by name
                   n      Repeat last search
                   t      Toggle if item is tagged
                   T      Tag no items
                   C-t    Tag all items
                   f      Enter a format to filter items
                   v      Toggle option information
                   q      Exit mode

             -f specifies an initial filter: the filter is a format - if
             it evaluates to zero, the item in the list is not shown,
             otherwise it is shown.  If a filter would lead to an empty
             list, it is ignored.  -F specifies the format for each item
             in the tree.  -N starts without the option information.
             This command works only if at least one client is attached.

     display-panes [-bN] [-d duration] [-t target-client] [template]
                   (alias: displayp)
             Display a visible indicator of each pane shown by
             target-client.  See the display-panes-colour and
             display-panes-active-colour session options.  The indicator
             is closed when a key is pressed (unless -N is given) or
             duration milliseconds have passed.  If -d is not given,
             display-panes-time is used.  A duration of zero means the
             indicator stays until a key is pressed.  While the
             indicator is on screen, a pane may be chosen with the ‘0’
             to ‘9’ keys, which will cause template to be executed as a
             command with ‘%%’ substituted by the pane ID.  The default
             template is "select-pane -t '%%'".  With -b, other commands
             are not blocked from running until the indicator is closed.

     find-window [-iCNrTZ] [-t target-pane] match-string
                   (alias: findw)
             Search for a fnmatch(3) pattern or, with -r, regular
             expression match-string in window names, titles, and
             visible content (but not history).  The flags control
             matching behavior: -C matches only visible window contents,
             -N matches only the window name and -T matches only the
             window title.  -i makes the search ignore case.  The
             default is -CNT.  -Z zooms the pane.

             This command works only if at least one client is attached.

     join-pane [-bdfhv] [-l size] [-s src-pane] [-t dst-pane]
                   (alias: joinp)
             Like split-window, but instead of splitting dst-pane and
             creating a new pane, split it and move src-pane into the
             space.  This can be used to reverse break-pane.  The -b
             option causes src-pane to be joined to left of or above
             dst-pane.

             If -s is omitted and a marked pane is present (see
             select-pane -m), the marked pane is used rather than the
             current pane.

     kill-pane [-a] [-t target-pane]
                   (alias: killp)
             Destroy the given pane.  If no panes remain in the
             containing window, it is also destroyed.  The -a option
             kills all but the pane given with -t.

     kill-window [-a] [-t target-window]
                   (alias: killw)
             Kill the current window or the window at target-window,
             removing it from any sessions to which it is linked.  The
             -a option kills all but the window given with -t.

     last-pane [-deZ] [-t target-window]
                   (alias: lastp)
             Select the last (previously selected) pane.  -Z keeps the
             window zoomed if it was zoomed.  -e enables or -d disables
             input to the pane.

     last-window [-t target-session]
                   (alias: last)
             Select the last (previously selected) window.  If no
             target-session is specified, select the last window of the
             current session.

     link-window [-abdk] [-s src-window] [-t dst-window]
                   (alias: linkw)
             Link the window at src-window to the specified dst-window.
             If dst-window is specified and no such window exists, the
             src-window is linked there.  With -a or -b the window is
             moved to the next index after or before dst-window
             (existing windows are moved if necessary).  If -k is given
             and dst-window exists, it is killed, otherwise an error is
             generated.  If -d is given, the newly linked window is not
             selected.

     list-panes [-as] [-F format] [-f filter] [-t target]
                   (alias: lsp)
             If -a is given, target is ignored and all panes on the
             server are listed.  If -s is given, target is a session (or
             the current session).  If neither is given, target is a
             window (or the current window).  -F specifies the format of
             each line and -f a filter.  Only panes for which the filter
             is true are shown.  See the FORMATS section.

     list-windows [-a] [-F format] [-f filter] [-t target-session]
                   (alias: lsw)
             If -a is given, list all windows on the server.  Otherwise,
             list windows in the current session or in target-session.
             -F specifies the format of each line and -f a filter.  Only
             windows for which the filter is true are shown.  See the
             FORMATS section.

     move-pane [-bdfhv] [-l size] [-s src-pane] [-t dst-pane]
                   (alias: movep)
             Does the same as join-pane.

     move-window [-abrdk] [-s src-window] [-t dst-window]
                   (alias: movew)
             This is similar to link-window, except the window at
             src-window is moved to dst-window.  With -r, all windows in
             the session are renumbered in sequential order, respecting
             the base-index option.

     new-window [-abdkPS] [-c start-directory] [-e environment] [-F
             format] [-n window-name] [-t target-window] [shell-command]
                   (alias: neww)
             Create a new window.  With -a or -b, the new window is
             inserted at the next index after or before the specified
             target-window, moving windows up if necessary; otherwise
             target-window is the new window location.

             If -d is given, the session does not make the new window
             the current window.  target-window represents the window to
             be created; if the target already exists an error is shown,
             unless the -k flag is used, in which case it is destroyed.
             If -S is given and a window named window-name already
             exists, it is selected (unless -d is also given in which
             case the command does nothing).

             shell-command is the command to execute.  If shell-command
             is not specified, the value of the default-command option
             is used.  -c specifies the working directory in which the
             new window is created.

             When the shell command completes, the window closes.  See
             the remain-on-exit option to change this behaviour.

             -e takes the form ‘VARIABLE=value’ and sets an environment
             variable for the newly created window; it may be specified
             multiple times.

             The TERM environment variable must be set to ‘screen’ or
             ‘tmux’ for all programs running inside tmux.  New windows
             will automatically have ‘TERM=screen’ added to their
             environment, but care must be taken not to reset this in
             shell start-up files or by the -e option.

             The -P option prints information about the new window after
             it has been created.  By default, it uses the format
             ‘#{session_name}:#{window_index}’ but a different format
             may be specified with -F.

     next-layout [-t target-window]
                   (alias: nextl)
             Move a window to the next layout and rearrange the panes to
             fit.

     next-window [-a] [-t target-session]
                   (alias: next)
             Move to the next window in the session.  If -a is used,
             move to the next window with an alert.

     pipe-pane [-IOo] [-t target-pane] [shell-command]
                   (alias: pipep)
             Pipe output sent by the program in target-pane to a shell
             command or vice versa.  A pane may only be connected to one
             command at a time, any existing pipe is closed before
             shell-command is executed.  The shell-command string may
             contain the special character sequences supported by the
             status-left option.  If no shell-command is given, the
             current pipe (if any) is closed.

             -I and -O specify which of the shell-command output streams
             are connected to the pane: with -I stdout is connected (so
             anything shell-command prints is written to the pane as if
             it were typed); with -O stdin is connected (so any output
             in the pane is piped to shell-command).  Both may be used
             together and if neither are specified, -O is used.

             The -o option only opens a new pipe if no previous pipe
             exists, allowing a pipe to be toggled with a single key,
             for example:

                   bind-key C-p pipe-pane -o 'cat >>~/output.#I-#P'

     previous-layout [-t target-window]
                   (alias: prevl)
             Move to the previous layout in the session.

     previous-window [-a] [-t target-session]
                   (alias: prev)
             Move to the previous window in the session.  With -a, move
             to the previous window with an alert.

     rename-window [-t target-window] new-name
                   (alias: renamew)
             Rename the current window, or the window at target-window
             if specified, to new-name.

     resize-pane [-DLMRTUZ] [-t target-pane] [-x width] [-y height]
             [adjustment]
                   (alias: resizep)
             Resize a pane, up, down, left or right by adjustment with
             -U, -D, -L or -R, or to an absolute size with -x or -y.
             The adjustment is given in lines or columns (the default is
             1); -x and -y may be a given as a number of lines or
             columns or followed by ‘%’ for a percentage of the window
             size (for example ‘-x 10%’).  With -Z, the active pane is
             toggled between zoomed (occupying the whole of the window)
             and unzoomed (its normal position in the layout).

             -M begins mouse resizing (only valid if bound to a mouse
             key binding, see MOUSE SUPPORT).

             -T trims all lines below the current cursor position and
             moves lines out of the history to replace them.

     resize-window [-aADLRU] [-t target-window] [-x width] [-y height]
             [adjustment]
                   (alias: resizew)
             Resize a window, up, down, left or right by adjustment with
             -U, -D, -L or -R, or to an absolute size with -x or -y.
             The adjustment is given in lines or cells (the default is
             1).  -A sets the size of the largest session containing the
             window; -a the size of the smallest.  This command will
             automatically set window-size to manual in the window
             options.

     respawn-pane [-k] [-c start-directory] [-e environment] [-t
             target-pane] [shell-command]
                   (alias: respawnp)
             Reactivate a pane in which the command has exited (see the
             remain-on-exit window option).  If shell-command is not
             given, the command used when the pane was created or last
             respawned is executed.  The pane must be already inactive,
             unless -k is given, in which case any existing command is
             killed.  -c specifies a new working directory for the pane.
             The -e option has the same meaning as for the new-window
             command.

     respawn-window [-k] [-c start-directory] [-e environment] [-t
             target-window] [shell-command]
                   (alias: respawnw)
             Reactivate a window in which the command has exited (see
             the remain-on-exit window option).  If shell-command is not
             given, the command used when the window was created or last
             respawned is executed.  The window must be already
             inactive, unless -k is given, in which case any existing
             command is killed.  -c specifies a new working directory
             for the window.  The -e option has the same meaning as for
             the new-window command.

     rotate-window [-DUZ] [-t target-window]
                   (alias: rotatew)
             Rotate the positions of the panes within a window, either
             upward (numerically lower) with -U or downward (numerically
             higher).  -Z keeps the window zoomed if it was zoomed.

     select-layout [-Enop] [-t target-pane] [layout-name]
                   (alias: selectl)
             Choose a specific layout for a window.  If layout-name is
             not given, the last preset layout used (if any) is
             reapplied.  -n and -p are equivalent to the next-layout and
             previous-layout commands.  -o applies the last set layout
             if possible (undoes the most recent layout change).  -E
             spreads the current pane and any panes next to it out
             evenly.

     select-pane [-DdeLlMmRUZ] [-T title] [-t target-pane]
                   (alias: selectp)
             Make pane target-pane the active pane in its window.  If
             one of -D, -L, -R, or -U is used, respectively the pane
             below, to the left, to the right, or above the target pane
             is used.  -Z keeps the window zoomed if it was zoomed.  -l
             is the same as using the last-pane command.  -e enables or
             -d disables input to the pane.  -T sets the pane title.

             -m and -M are used to set and clear the marked pane.  There
             is one marked pane at a time, setting a new marked pane
             clears the last.  The marked pane is the default target for
             -s to join-pane, move-pane, swap-pane and swap-window.

     select-window [-lnpT] [-t target-window]
                   (alias: selectw)
             Select the window at target-window.  -l, -n and -p are
             equivalent to the last-window, next-window and
             previous-window commands.  If -T is given and the selected
             window is already the current window, the command behaves
             like last-window.

     split-window [-bdfhIvPZ] [-c start-directory] [-e environment] [-l
             size] [-t target-pane] [shell-command] [-F format]
                   (alias: splitw)
             Create a new pane by splitting target-pane: -h does a
             horizontal split and -v a vertical split; if neither is
             specified, -v is assumed.  The -l option specifies the size
             of the new pane in lines (for vertical split) or in columns
             (for horizontal split); size may be followed by ‘%’ to
             specify a percentage of the available space.  The -b option
             causes the new pane to be created to the left of or above
             target-pane.  The -f option creates a new pane spanning the
             full window height (with -h) or full window width (with
             -v), instead of splitting the active pane.  -Z zooms if the
             window is not zoomed, or keeps it zoomed if already zoomed.

             An empty shell-command ('') will create a pane with no
             command running in it.  Output can be sent to such a pane
             with the display-message command.  The -I flag (if
             shell-command is not specified or empty) will create an
             empty pane and forward any output from stdin to it.  For
             example:

                   $ make 2>&1|tmux splitw -dI &

             All other options have the same meaning as for the
             new-window command.

     swap-pane [-dDUZ] [-s src-pane] [-t dst-pane]
                   (alias: swapp)
             Swap two panes.  If -U is used and no source pane is
             specified with -s, dst-pane is swapped with the previous
             pane (before it numerically); -D swaps with the next pane
             (after it numerically).  -d instructs tmux not to change
             the active pane and -Z keeps the window zoomed if it was
             zoomed.

             If -s is omitted and a marked pane is present (see
             select-pane -m), the marked pane is used rather than the
             current pane.

     swap-window [-d] [-s src-window] [-t dst-window]
                   (alias: swapw)
             This is similar to link-window, except the source and
             destination windows are swapped.  It is an error if no
             window exists at src-window.  If -d is given, the new
             window does not become the current window.

             If -s is omitted and a marked pane is present (see
             select-pane -m), the window containing the marked pane is
             used rather than the current window.

     unlink-window [-k] [-t target-window]
                   (alias: unlinkw)
             Unlink target-window.  Unless -k is given, a window may be
             unlinked only if it is linked to multiple sessions -
             windows may not be linked to no sessions; if -k is
             specified and the window is linked to only one session, it
             is unlinked and destroyed.

KEY BINDINGS         top

     tmux allows a command to be bound to most keys, with or without a
     prefix key.  When specifying keys, most represent themselves (for
     example ‘A’ to ‘Z’).  Ctrl keys may be prefixed with ‘C-’ or ‘^’,
     Shift keys with ‘S-’ and Alt (meta) with ‘M-’.  In addition, the
     following special key names are accepted: Up, Down, Left, Right,
     BSpace, BTab, DC (Delete), End, Enter, Escape, F1 to F12, Home, IC
     (Insert), NPage/PageDown/PgDn, PPage/PageUp/PgUp, Space, and Tab.
     Note that to bind the ‘"’ or ‘'’ keys, quotation marks are
     necessary, for example:

           bind-key '"' split-window
           bind-key "'" new-window

     A command bound to the Any key will execute for all keys which do
     not have a more specific binding.

     Commands related to key bindings are as follows:

     bind-key [-nr] [-N note] [-T key-table] key command [arguments]
                   (alias: bind)
             Bind key key to command.  Keys are bound in a key table.
             By default (without -T), the key is bound in the prefix key
             table.  This table is used for keys pressed after the
             prefix key (for example, by default ‘c’ is bound to
             new-window in the prefix table, so ‘C-b c’ creates a new
             window).  The root table is used for keys pressed without
             the prefix key: binding ‘c’ to new-window in the root table
             (not recommended) means a plain ‘c’ will create a new
             window.  -n is an alias for -T root.  Keys may also be
             bound in custom key tables and the switch-client -T command
             used to switch to them from a key binding.  The -r flag
             indicates this key may repeat, see the repeat-time option.
             -N attaches a note to the key (shown with list-keys -N).

             To view the default bindings and possible commands, see the
             list-keys command.

     list-keys [-1aN] [-P prefix-string -T key-table] [key]
                   (alias: lsk)
             List key bindings.  There are two forms: the default lists
             keys as bind-key commands; -N lists only keys with attached
             notes and shows only the key and note for each key.

             With the default form, all key tables are listed by
             default.  -T lists only keys in key-table.

             With the -N form, only keys in the root and prefix key
             tables are listed by default; -T also lists only keys in
             key-table.  -P specifies a prefix to print before each key
             and -1 lists only the first matching key.  -a lists the
             command for keys that do not have a note rather than
             skipping them.

     send-keys [-FHlMRX] [-N repeat-count] [-t target-pane] key ...
                   (alias: send)
             Send a key or keys to a window.  Each argument key is the
             name of the key (such as ‘C-a’ or ‘NPage’) to send; if the
             string is not recognised as a key, it is sent as a series
             of characters.  All arguments are sent sequentially from
             first to last.

             The -l flag disables key name lookup and processes the keys
             as literal UTF-8 characters.  The -H flag expects each key
             to be a hexadecimal number for an ASCII character.

             The -R flag causes the terminal state to be reset.

             -M passes through a mouse event (only valid if bound to a
             mouse key binding, see MOUSE SUPPORT).

             -X is used to send a command into copy mode - see the
             WINDOWS AND PANES section.  -N specifies a repeat count and
             -F expands formats in arguments where appropriate.

     send-prefix [-2] [-t target-pane]
             Send the prefix key, or with -2 the secondary prefix key,
             to a window as if it was pressed.

     unbind-key [-anq] [-T key-table] key
                   (alias: unbind)
             Unbind the command bound to key.  -n and -T are the same as
             for bind-key.  If -a is present, all key bindings are
             removed.  The -q option prevents errors being returned.

OPTIONS         top

     The appearance and behaviour of tmux may be modified by changing
     the value of various options.  There are four types of option:
     server options, session options, window options, and pane options.

     The tmux server has a set of global server options which do not
     apply to any particular window or session or pane.  These are
     altered with the set-option -s command, or displayed with the
     show-options -s command.

     In addition, each individual session may have a set of session
     options, and there is a separate set of global session options.
     Sessions which do not have a particular option configured inherit
     the value from the global session options.  Session options are set
     or unset with the set-option command and may be listed with the
     show-options command.  The available server and session options are
     listed under the set-option command.

     Similarly, a set of window options is attached to each window and a
     set of pane options to each pane.  Pane options inherit from window
     options.  This means any pane option may be set as a window option
     to apply the option to all panes in the window without the option
     set, for example these commands will set the background colour to
     red for all panes except pane 0:

           set -w window-style bg=red
           set -pt:.0 window-style bg=blue

     There is also a set of global window options from which any unset
     window or pane options are inherited.  Window and pane options are
     altered with set-option -w and -p commands and displayed with
     show-option -w and -p.

     tmux also supports user options which are prefixed with a ‘@’.
     User options may have any name, so long as they are prefixed with
     ‘@’, and be set to any string.  For example:

           $ tmux set -wq @foo "abc123"
           $ tmux show -wv @foo
           abc123

     Commands which set options are as follows:

     set-option [-aFgopqsuUw] [-t target-pane] option value
                   (alias: set)
             Set a pane option with -p, a window option with -w, a
             server option with -s, otherwise a session option.  If the
             option is not a user option, -w or -s may be unnecessary -
             tmux will infer the type from the option name, assuming -w
             for pane options.  If -g is given, the global session or
             window option is set.

             -F expands formats in the option value.  The -u flag unsets
             an option, so a session inherits the option from the global
             options (or with -g, restores a global option to the
             default).  -U unsets an option (like -u) but if the option
             is a pane option also unsets the option on any panes in the
             window.  value depends on the option and may be a number, a
             string, or a flag (on, off, or omitted to toggle).

             The -o flag prevents setting an option that is already set
             and the -q flag suppresses errors about unknown or
             ambiguous options.

             With -a, and if the option expects a string or a style,
             value is appended to the existing setting.  For example:

                   set -g status-left "foo"
                   set -ag status-left "bar"

             Will result in ‘foobar’.  And:

                   set -g status-style "bg=red"
                   set -ag status-style "fg=blue"

             Will result in a red background and blue foreground.
             Without -a, the result would be the default background and
             a blue foreground.

     show-options [-AgHpqsvw] [-t target-pane] [option]
                   (alias: show)
             Show the pane options (or a single option if option is
             provided) with -p, the window options with -w, the server
             options with -s, otherwise the session options.  If the
             option is not a user option, -w or -s may be unnecessary -
             tmux will infer the type from the option name, assuming -w
             for pane options.  Global session or window options are
             listed if -g is used.  -v shows only the option value, not
             the name.  If -q is set, no error will be returned if
             option is unset.  -H includes hooks (omitted by default).
             -A includes options inherited from a parent set of options,
             such options are marked with an asterisk.

     Available server options are:

     backspace key
             Set the key sent by tmux for backspace.

     buffer-limit number
             Set the number of buffers; as new buffers are added to the
             top of the stack, old ones are removed from the bottom if
             necessary to maintain this maximum length.

     command-alias[] name=value
             This is an array of custom aliases for commands.  If an
             unknown command matches name, it is replaced with value.
             For example, after:

                   set -s command-alias[100] zoom='resize-pane -Z'

             Using:

                   zoom -t:.1

             Is equivalent to:

                   resize-pane -Z -t:.1

             Note that aliases are expanded when a command is parsed
             rather than when it is executed, so binding an alias with
             bind-key will bind the expanded form.

     default-terminal terminal
             Set the default terminal for new windows created in this
             session - the default value of the TERM environment
             variable.  For tmux to work correctly, this must be set to
             ‘screen’, ‘tmux’ or a derivative of them.

     copy-command shell-command
             Give the command to pipe to if the copy-pipe copy mode
             command is used without arguments.

     escape-time time
             Set the time in milliseconds for which tmux waits after an
             escape is input to determine if it is part of a function or
             meta key sequences.  The default is 500 milliseconds.

     editor shell-command
             Set the command used when tmux runs an editor.

     exit-empty [on | off]
             If enabled (the default), the server will exit when there
             are no active sessions.

     exit-unattached [on | off]
             If enabled, the server will exit when there are no attached
             clients.

     extended-keys [on | off | always]
             When on or always, the escape sequence to enable extended
             keys is sent to the terminal, if tmux knows that it is
             supported.  tmux always recognises extended keys itself.
             If this option is on, tmux will only forward extended keys
             to applications when they request them; if always, tmux
             will always forward the keys.

     focus-events [on | off]
             When enabled, focus events are requested from the terminal
             if supported and passed through to applications running in
             tmux.  Attached clients should be detached and attached
             again after changing this option.

     history-file path
             If not empty, a file to which tmux will write command
             prompt history on exit and load it from on start.

     message-limit number
             Set the number of error or information messages to save in
             the message log for each client.

     prompt-history-limit number
             Set the number of history items to save in the history file
             for each type of command prompt.

     set-clipboard [on | external | off]
             Attempt to set the terminal clipboard content using the
             xterm(1) escape sequence, if there is an Ms entry in the
             terminfo(5) description (see the TERMINFO EXTENSIONS
             section).

             If set to on, tmux will both accept the escape sequence to
             create a buffer and attempt to set the terminal clipboard.
             If set to external, tmux will attempt to set the terminal
             clipboard but ignore attempts by applications to set tmux
             buffers.  If off, tmux will neither accept the clipboard
             escape sequence nor attempt to set the clipboard.

             Note that this feature needs to be enabled in xterm(1) by
             setting the resource:

                   disallowedWindowOps: 20,21,SetXprop

             Or changing this property from the xterm(1) interactive
             menu when required.

     terminal-features[] string
             Set terminal features for terminal types read from
             terminfo(5).  tmux has a set of named terminal features.
             Each will apply appropriate changes to the terminfo(5)
             entry in use.

             tmux can detect features for a few common terminals; this
             option can be used to easily tell tmux about features
             supported by terminals it cannot detect.  The
             terminal-overrides option allows individual terminfo(5)
             capabilities to be set instead, terminal-features is
             intended for classes of functionality supported in a
             standard way but not reported by terminfo(5).  Care must be
             taken to configure this only with features the terminal
             actually supports.

             This is an array option where each entry is a colon-
             separated string made up of a terminal type pattern
             (matched using fnmatch(3)) followed by a list of terminal
             features.  The available features are:

             256     Supports 256 colours with the SGR escape sequences.

             clipboard
                     Allows setting the system clipboard.

             ccolour
                     Allows setting the cursor colour.

             cstyle  Allows setting the cursor style.

             extkeys
                     Supports extended keys.

             focus   Supports focus reporting.

             margins
                     Supports DECSLRM margins.

             mouse   Supports xterm(1) mouse sequences.

             overline
                     Supports the overline SGR attribute.

             rectfill
                     Supports the DECFRA rectangle fill escape sequence.

             RGB     Supports RGB colour with the SGR escape sequences.

             strikethrough
                     Supports the strikethrough SGR escape sequence.

             sync    Supports synchronized updates.

             title   Supports xterm(1) title setting.

             usstyle
                     Allows underscore style and colour to be set.

     terminal-overrides[] string
             Allow terminal descriptions read using terminfo(5) to be
             overridden.  Each entry is a colon-separated string made up
             of a terminal type pattern (matched using fnmatch(3)) and a
             set of name=value entries.

             For example, to set the ‘clear’ terminfo(5) entry to
             ‘\e[H\e[2J’ for all terminal types matching ‘rxvt*’:

                   rxvt*:clear=\e[H\e[2J

             The terminal entry value is passed through strunvis(3)
             before interpretation.

     user-keys[] key
             Set list of user-defined key escape sequences.  Each item
             is associated with a key named ‘User0’, ‘User1’, and so on.

             For example:

                   set -s user-keys[0] "\e[5;30012~"
                   bind User0 resize-pane -L 3

     Available session options are:

     activity-action [any | none | current | other]
             Set action on window activity when monitor-activity is on.
             any means activity in any window linked to a session causes
             a bell or message (depending on visual-activity) in the
             current window of that session, none means all activity is
             ignored (equivalent to monitor-activity being off), current
             means only activity in windows other than the current
             window are ignored and other means activity in the current
             window is ignored but not those in other windows.

     assume-paste-time milliseconds
             If keys are entered faster than one in milliseconds, they
             are assumed to have been pasted rather than typed and tmux
             key bindings are not processed.  The default is one
             millisecond and zero disables.

     base-index index
             Set the base index from which an unused index should be
             searched when a new window is created.  The default is
             zero.

     bell-action [any | none | current | other]
             Set action on a bell in a window when monitor-bell is on.
             The values are the same as those for activity-action.

     default-command shell-command
             Set the command used for new windows (if not specified when
             the window is created) to shell-command, which may be any
             sh(1) command.  The default is an empty string, which
             instructs tmux to create a login shell using the value of
             the default-shell option.

     default-shell path
             Specify the default shell.  This is used as the login shell
             for new windows when the default-command option is set to
             empty, and must be the full path of the executable.  When
             started tmux tries to set a default value from the first
             suitable of the SHELL environment variable, the shell
             returned by getpwuid(3), or /bin/sh.  This option should be
             configured when tmux is used as a login shell.

     default-size XxY
             Set the default size of new windows when the window-size
             option is set to manual or when a session is created with
             new-session -d.  The value is the width and height
             separated by an ‘x’ character.  The default is 80x24.

     destroy-unattached [on | off]
             If enabled and the session is no longer attached to any
             clients, it is destroyed.

     detach-on-destroy [off | on | no-detached]
             If on (the default), the client is detached when the
             session it is attached to is destroyed.  If off, the client
             is switched to the most recently active of the remaining
             sessions.  If no-detached, the client is detached only if
             there are no detached sessions; if detached sessions exist,
             the client is switched to the most recently active.

     display-panes-active-colour colour
             Set the colour used by the display-panes command to show
             the indicator for the active pane.

     display-panes-colour colour
             Set the colour used by the display-panes command to show
             the indicators for inactive panes.

     display-panes-time time
             Set the time in milliseconds for which the indicators shown
             by the display-panes command appear.

     display-time time
             Set the amount of time for which status line messages and
             other on-screen indicators are displayed.  If set to 0,
             messages and indicators are displayed until a key is
             pressed.  time is in milliseconds.

     history-limit lines
             Set the maximum number of lines held in window history.
             This setting applies only to new windows - existing window
             histories are not resized and retain the limit at the point
             they were created.

     key-table key-table
             Set the default key table to key-table instead of root.

     lock-after-time number
             Lock the session (like the lock-session command) after
             number seconds of inactivity.  The default is not to lock
             (set to 0).

     lock-command shell-command
             Command to run when locking each client.  The default is to
             run lock(1) with -np.

     message-command-style style
             Set status line message command style.  This is used for
             the command prompt with vi(1) keys when in command mode.
             For how to specify style, see the STYLES section.

     message-style style
             Set status line message style.  This is used for messages
             and for the command prompt.  For how to specify style, see
             the STYLES section.

     mouse [on | off]
             If on, tmux captures the mouse and allows mouse events to
             be bound as key bindings.  See the MOUSE SUPPORT section
             for details.

     prefix key
             Set the key accepted as a prefix key.  In addition to the
             standard keys described under KEY BINDINGS, prefix can be
             set to the special key ‘None’ to set no prefix.

     prefix2 key
             Set a secondary key accepted as a prefix key.  Like prefix,
             prefix2 can be set to ‘None’.

     renumber-windows [on | off]
             If on, when a window is closed in a session, automatically
             renumber the other windows in numerical order.  This
             respects the base-index option if it has been set.  If off,
             do not renumber the windows.

     repeat-time time
             Allow multiple commands to be entered without pressing the
             prefix-key again in the specified time milliseconds (the
             default is 500).  Whether a key repeats may be set when it
             is bound using the -r flag to bind-key.  Repeat is enabled
             for the default keys bound to the resize-pane command.

     set-titles [on | off]
             Attempt to set the client terminal title using the tsl and
             fsl terminfo(5) entries if they exist.  tmux automatically
             sets these to the \e]0;...\007 sequence if the terminal
             appears to be xterm(1).  This option is off by default.

     set-titles-string string
             String used to set the client terminal title if set-titles
             is on.  Formats are expanded, see the FORMATS section.

     silence-action [any | none | current | other]
             Set action on window silence when monitor-silence is on.
             The values are the same as those for activity-action.

     status [off | on | 2 | 3 | 4 | 5]
             Show or hide the status line or specify its size.  Using on
             gives a status line one row in height; 2, 3, 4 or 5 more
             rows.

     status-format[] format
             Specify the format to be used for each line of the status
             line.  The default builds the top status line from the
             various individual status options below.

     status-interval interval
             Update the status line every interval seconds.  By default,
             updates will occur every 15 seconds.  A setting of zero
             disables redrawing at interval.

     status-justify [left | centre | right | absolute-centre]
             Set the position of the window list in the status line:
             left, centre or right.  centre puts the window list in the
             relative centre of the available free space; absolute-
             centre uses the centre of the entire horizontal space.

     status-keys [vi | emacs]
             Use vi or emacs-style key bindings in the status line, for
             example at the command prompt.  The default is emacs,
             unless the VISUAL or EDITOR environment variables are set
             and contain the string ‘vi’.

     status-left string
             Display string (by default the session name) to the left of
             the status line.  string will be passed through
             strftime(3).  Also see the FORMATS and STYLES sections.

             For details on how the names and titles can be set see the
             NAMES AND TITLES section.

             Examples are:

                   #(sysctl vm.loadavg)
                   #[fg=yellow,bold]#(apm -l)%%#[default] [#S]

             The default is ‘[#S] ’.

     status-left-length length
             Set the maximum length of the left component of the status
             line.  The default is 10.

     status-left-style style
             Set the style of the left part of the status line.  For how
             to specify style, see the STYLES section.

     status-position [top | bottom]
             Set the position of the status line.

     status-right string
             Display string to the right of the status line.  By
             default, the current pane title in double quotes, the date
             and the time are shown.  As with status-left, string will
             be passed to strftime(3) and character pairs are replaced.

     status-right-length length
             Set the maximum length of the right component of the status
             line.  The default is 40.

     status-right-style style
             Set the style of the right part of the status line.  For
             how to specify style, see the STYLES section.

     status-style style
             Set status line style.  For how to specify style, see the
             STYLES section.

     update-environment[] variable
             Set list of environment variables to be copied into the
             session environment when a new session is created or an
             existing session is attached.  Any variables that do not
             exist in the source environment are set to be removed from
             the session environment (as if -r was given to the
             set-environment command).

     visual-activity [on | off | both]
             If on, display a message instead of sending a bell when
             activity occurs in a window for which the monitor-activity
             window option is enabled.  If set to both, a bell and a
             message are produced.

     visual-bell [on | off | both]
             If on, a message is shown on a bell in a window for which
             the monitor-bell window option is enabled instead of it
             being passed through to the terminal (which normally makes
             a sound).  If set to both, a bell and a message are
             produced.  Also see the bell-action option.

     visual-silence [on | off | both]
             If monitor-silence is enabled, prints a message after the
             interval has expired on a given window instead of sending a
             bell.  If set to both, a bell and a message are produced.

     word-separators string
             Sets the session's conception of what characters are
             considered word separators, for the purposes of the next
             and previous word commands in copy mode.

             Available window options are:

             aggressive-resize [on | off]
                     Aggressively resize the chosen window.  This means
                     that tmux will resize the window to the size of the
                     smallest or largest session (see the window-size
                     option) for which it is the current window, rather
                     than the session to which it is attached.  The
                     window may resize when the current window is
                     changed on another session; this option is good for
                     full-screen programs which support SIGWINCH and
                     poor for interactive programs such as shells.

             automatic-rename [on | off]
                     Control automatic window renaming.  When this
                     setting is enabled, tmux will rename the window
                     automatically using the format specified by
                     automatic-rename-format.  This flag is
                     automatically disabled for an individual window
                     when a name is specified at creation with
                     new-window or new-session, or later with
                     rename-window, or with a terminal escape sequence.
                     It may be switched off globally with:

                           set-option -wg automatic-rename off

             automatic-rename-format format
                     The format (see FORMATS) used when the
                     automatic-rename option is enabled.

             clock-mode-colour colour
                     Set clock colour.

             clock-mode-style [12 | 24]
                     Set clock hour format.

             main-pane-height height
             main-pane-width width
                     Set the width or height of the main (left or top)
                     pane in the main-horizontal or main-vertical
                     layouts.  If suffixed by ‘%’, this is a percentage
                     of the window size.

             copy-mode-match-style style
                     Set the style of search matches in copy mode.  For
                     how to specify style, see the STYLES section.

             copy-mode-mark-style style
                     Set the style of the line containing the mark in
                     copy mode.  For how to specify style, see the
                     STYLES section.

             copy-mode-current-match-style style
                     Set the style of the current search match in copy
                     mode.  For how to specify style, see the STYLES
                     section.

             mode-keys [vi | emacs]
                     Use vi or emacs-style key bindings in copy mode.
                     The default is emacs, unless VISUAL or EDITOR
                     contains ‘vi’.

             mode-style style
                     Set window modes style.  For how to specify style,
                     see the STYLES section.

             monitor-activity [on | off]
                     Monitor for activity in the window.  Windows with
                     activity are highlighted in the status line.

             monitor-bell [on | off]
                     Monitor for a bell in the window.  Windows with a
                     bell are highlighted in the status line.

             monitor-silence [interval]
                     Monitor for silence (no activity) in the window
                     within interval seconds.  Windows that have been
                     silent for the interval are highlighted in the
                     status line.  An interval of zero disables the
                     monitoring.

             other-pane-height height
                     Set the height of the other panes (not the main
                     pane) in the main-horizontal layout.  If this
                     option is set to 0 (the default), it will have no
                     effect.  If both the main-pane-height and
                     other-pane-height options are set, the main pane
                     will grow taller to make the other panes the
                     specified height, but will never shrink to do so.
                     If suffixed by ‘%’, this is a percentage of the
                     window size.

             other-pane-width width
                     Like other-pane-height, but set the width of other
                     panes in the main-vertical layout.

             pane-active-border-style style
                     Set the pane border style for the currently active
                     pane.  For how to specify style, see the STYLES
                     section.  Attributes are ignored.

             pane-base-index index
                     Like base-index, but set the starting index for
                     pane numbers.

             pane-border-format format
                     Set the text shown in pane border status lines.

             pane-border-lines type
                     Set the type of characters used for drawing pane
                     borders.  type may be one of:

                     single  single lines using ACS or UTF-8 characters

                     double  double lines using UTF-8 characters

                     heavy   heavy lines using UTF-8 characters

                     simple  simple ASCII characters

                     number  the pane number

                     ‘double’ and ‘heavy’ will fall back to standard ACS
                     line drawing when UTF-8 is not supported.

             pane-border-status [off | top | bottom]
                     Turn pane border status lines off or set their
                     position.

             pane-border-style style
                     Set the pane border style for panes aside from the
                     active pane.  For how to specify style, see the
                     STYLES section.  Attributes are ignored.

             window-status-activity-style style
                     Set status line style for windows with an activity
                     alert.  For how to specify style, see the STYLES
                     section.

             window-status-bell-style style
                     Set status line style for windows with a bell
                     alert.  For how to specify style, see the STYLES
                     section.

             window-status-current-format string
                     Like window-status-format, but is the format used
                     when the window is the current window.

             window-status-current-style style
                     Set status line style for the currently active
                     window.  For how to specify style, see the STYLES
                     section.

             window-status-format string
                     Set the format in which the window is displayed in
                     the status line window list.  See the FORMATS and
                     STYLES sections.

             window-status-last-style style
                     Set status line style for the last active window.
                     For how to specify style, see the STYLES section.

             window-status-separator string
                     Sets the separator drawn between windows in the
                     status line.  The default is a single space
                     character.

             window-status-style style
                     Set status line style for a single window.  For how
                     to specify style, see the STYLES section.

             window-size largest | smallest | manual | latest
                     Configure how tmux determines the window size.  If
                     set to largest, the size of the largest attached
                     session is used; if smallest, the size of the
                     smallest.  If manual, the size of a new window is
                     set from the default-size option and windows are
                     resized automatically.  With latest, tmux uses the
                     size of the client that had the most recent
                     activity.  See also the resize-window command and
                     the aggressive-resize option.

             wrap-search [on | off]
                     If this option is set, searches will wrap around
                     the end of the pane contents.  The default is on.

             Available pane options are:

             allow-rename [on | off]
                     Allow programs in the pane to change the window
                     name using a terminal escape sequence (\ek...\e\\).

             alternate-screen [on | off]
                     This option configures whether programs running
                     inside the pane may use the terminal alternate
                     screen feature, which allows the smcup and rmcup
                     terminfo(5) capabilities.  The alternate screen
                     feature preserves the contents of the window when
                     an interactive application starts and restores it
                     on exit, so that any output visible before the
                     application starts reappears unchanged after it
                     exits.

             remain-on-exit [on | off | failed]
                     A pane with this flag set is not destroyed when the
                     program running in it exits.  If set to failed,
                     then only when the program exit status is not zero.
                     The pane may be reactivated with the respawn-pane
                     command.

             synchronize-panes [on | off]
                     Duplicate input to all other panes in the same
                     window where this option is also on (only for panes
                     that are not in any mode).

             window-active-style style
                     Set the pane style when it is the active pane.  For
                     how to specify style, see the STYLES section.

             window-style style
                     Set the pane style.  For how to specify style, see
                     the STYLES section.

HOOKS         top

     tmux allows commands to run on various triggers, called hooks.
     Most tmux commands have an after hook and there are a number of
     hooks not associated with commands.

     Hooks are stored as array options, members of the array are
     executed in order when the hook is triggered.  Like options
     different hooks may be global or belong to a session, window or
     pane.  Hooks may be configured with the set-hook or set-option
     commands and displayed with show-hooks or show-options -H.  The
     following two commands are equivalent:

            set-hook -g pane-mode-changed[42] 'set -g status-left-style bg=red'
            set-option -g pane-mode-changed[42] 'set -g status-left-style bg=red'

     Setting a hook without specifying an array index clears the hook
     and sets the first member of the array.

     A command's after hook is run after it completes, except when the
     command is run as part of a hook itself.  They are named with an
     ‘after-’ prefix.  For example, the following command adds a hook to
     select the even-vertical layout after every split-window:

           set-hook -g after-split-window "selectl even-vertical"

     All the notifications listed in the CONTROL MODE section are hooks
     (without any arguments), except %exit.  The following additional
     hooks are available:

     alert-activity          Run when a window has activity.  See
                             monitor-activity.

     alert-bell              Run when a window has received a bell.  See
                             monitor-bell.

     alert-silence           Run when a window has been silent.  See
                             monitor-silence.

     client-attached         Run when a client is attached.

     client-detached         Run when a client is detached

     client-resized          Run when a client is resized.

     client-session-changed  Run when a client's attached session is
                             changed.

     pane-died               Run when the program running in a pane
                             exits, but remain-on-exit is on so the pane
                             has not closed.

     pane-exited             Run when the program running in a pane
                             exits.

     pane-focus-in           Run when the focus enters a pane, if the
                             focus-events option is on.

     pane-focus-out          Run when the focus exits a pane, if the
                             focus-events option is on.

     pane-set-clipboard      Run when the terminal clipboard is set
                             using the xterm(1) escape sequence.

     session-created         Run when a new session created.

     session-closed          Run when a session closed.

     session-renamed         Run when a session is renamed.

     window-linked           Run when a window is linked into a session.

     window-renamed          Run when a window is renamed.

     window-unlinked         Run when a window is unlinked from a
                             session.

     Hooks are managed with these commands:

     set-hook [-agpRuw] [-t target-pane] hook-name command
             Without -R, sets (or with -u unsets) hook hook-name to
             command.  The flags are the same as for set-option.

             With -R, run hook-name immediately.

     show-hooks [-gpw] [-t target-pane]
             Shows hooks.  The flags are the same as for show-options.

MOUSE SUPPORT         top

     If the mouse option is on (the default is off), tmux allows mouse
     events to be bound as keys.  The name of each key is made up of a
     mouse event (such as ‘MouseUp1’) and a location suffix, one of the
     following:

           Pane             the contents of a pane
           Border           a pane border
           Status           the status line window list
           StatusLeft       the left part of the status line
           StatusRight      the right part of the status line
           StatusDefault    any other part of the status line

     The following mouse events are available:

           WheelUp       WheelDown
           MouseDown1    MouseUp1      MouseDrag1   MouseDragEnd1
           MouseDown2    MouseUp2      MouseDrag2   MouseDragEnd2
           MouseDown3    MouseUp3      MouseDrag3   MouseDragEnd3
           SecondClick1  SecondClick2  SecondClick3
           DoubleClick1  DoubleClick2  DoubleClick3
           TripleClick1  TripleClick2  TripleClick3

     The ‘SecondClick’ events are fired for the second click of a double
     click, even if there may be a third click which will fire
     ‘TripleClick’ instead of ‘DoubleClick’.

     Each should be suffixed with a location, for example
     ‘MouseDown1Status’.

     The special token ‘{mouse}’ or ‘=’ may be used as target-window or
     target-pane in commands bound to mouse key bindings.  It resolves
     to the window or pane over which the mouse event took place (for
     example, the window in the status line over which button 1 was
     released for a ‘MouseUp1Status’ binding, or the pane over which the
     wheel was scrolled for a ‘WheelDownPane’ binding).

     The send-keys -M flag may be used to forward a mouse event to a
     pane.

     The default key bindings allow the mouse to be used to select and
     resize panes, to copy text and to change window using the status
     line.  These take effect if the mouse option is turned on.

FORMATS         top

     Certain commands accept the -F flag with a format argument.  This
     is a string which controls the output format of the command.
     Format variables are enclosed in ‘#{’ and ‘}’, for example
     ‘#{session_name}’.  The possible variables are listed in the table
     below, or the name of a tmux option may be used for an option's
     value.  Some variables have a shorter alias such as ‘#S’; ‘##’ is
     replaced by a single ‘#’, ‘#,’ by a ‘,’ and ‘#}’ by a ‘}’.

     Conditionals are available by prefixing with ‘?’ and separating two
     alternatives with a comma; if the specified variable exists and is
     not zero, the first alternative is chosen, otherwise the second is
     used.  For example ‘#{?session_attached,attached,not attached}’
     will include the string ‘attached’ if the session is attached and
     the string ‘not attached’ if it is unattached, or
     ‘#{?automatic-rename,yes,no}’ will include ‘yes’ if
     automatic-rename is enabled, or ‘no’ if not.  Conditionals can be
     nested arbitrarily.  Inside a conditional, ‘,’ and ‘}’ must be
     escaped as ‘#,’ and ‘#}’, unless they are part of a ‘#{...}’
     replacement.  For example:

           #{?pane_in_mode,#[fg=white#,bg=red],#[fg=red#,bg=white]}#W .

     String comparisons may be expressed by prefixing two comma-
     separated alternatives by ‘==’, ‘!=’, ‘<’, ‘>’, ‘<=’ or ‘>=’ and a
     colon.  For example ‘#{==:#{host},myhost}’ will be replaced by ‘1’
     if running on ‘myhost’, otherwise by ‘0’.  ‘||’ and ‘&&’ evaluate
     to true if either or both of two comma-separated alternatives are
     true, for example ‘#{||:#{pane_in_mode},#{alternate_on}}’.

     An ‘m’ specifies an fnmatch(3) or regular expression comparison.
     The first argument is the pattern and the second the string to
     compare.  An optional argument specifies flags: ‘r’ means the
     pattern is a regular expression instead of the default fnmatch(3)
     pattern, and ‘i’ means to ignore case.  For example:
     ‘#{m:*foo*,#{host}}’ or ‘#{m/ri:^A,MYVAR}’.  A ‘C’ performs a
     search for an fnmatch(3) pattern or regular expression in the pane
     content and evaluates to zero if not found, or a line number if
     found.  Like ‘m’, an ‘r’ flag means search for a regular expression
     and ‘i’ ignores case.  For example: ‘#{C/r:^Start}’

     Numeric operators may be performed by prefixing two comma-separated
     alternatives with an ‘e’ and an operator.  An optional ‘f’ flag may
     be given after the operator to use floating point numbers,
     otherwise integers are used.  This may be followed by a number
     giving the number of decimal places to use for the result.  The
     available operators are: addition ‘+’, subtraction ‘-’,
     multiplication ‘*’, division ‘/’, modulus ‘m’ or ‘%’ (note that ‘%’
     must be escaped as ‘%%’ in formats which are also expanded by
     strftime(3)) and numeric comparison operators ‘==’, ‘!=’, ‘<’,
     ‘<=’, ‘>’ and ‘>=’.  For example, ‘#{e|*|f|4:5.5,3}’ multiplies 5.5
     by 3 for a result with four decimal places and ‘#{e|%%:7,3}’
     returns the modulus of 7 and 3.  ‘a’ replaces a numeric argument by
     its ASCII equivalent, so ‘#{a:98}’ results in ‘b’.

     A limit may be placed on the length of the resultant string by
     prefixing it by an ‘=’, a number and a colon.  Positive numbers
     count from the start of the string and negative from the end, so
     ‘#{=5:pane_title}’ will include at most the first five characters
     of the pane title, or ‘#{=-5:pane_title}’ the last five characters.
     A suffix or prefix may be given as a second argument - if provided
     then it is appended or prepended to the string if the length has
     been trimmed, for example ‘#{=/5/...:pane_title}’ will append ‘...’
     if the pane title is more than five characters.  Similarly, ‘p’
     pads the string to a given width, for example ‘#{p10:pane_title}’
     will result in a width of at least 10 characters.  A positive width
     pads on the left, a negative on the right.  ‘n’ expands to the
     length of the variable and ‘w’ to its width when displayed, for
     example ‘#{n:window_name}’.

     Prefixing a time variable with ‘t:’ will convert it to a string, so
     if ‘#{window_activity}’ gives ‘1445765102’, ‘#{t:window_activity}’
     gives ‘Sun Oct 25 09:25:02 2015’.  Adding ‘p (’ ‘`t/p`’) will use
     shorter but less accurate time format for times in the past.  A
     custom format may be given using an ‘f’ suffix (note that ‘%’ must
     be escaped as ‘%%’ if the format is separately being passed through
     strftime(3), for example in the status-left option):
     ‘#{t/f/%%H#:%%M:window_activity}’, see strftime(3).

     The ‘b:’ and ‘d:’ prefixes are basename(3) and dirname(3) of the
     variable respectively.  ‘q:’ will escape sh(1) special characters
     or with a ‘h’ suffix, escape hash characters (so ‘#’ becomes ‘##’).
     ‘E:’ will expand the format twice, for example ‘#{E:status-left}’
     is the result of expanding the content of the status-left option
     rather than the option itself.  ‘T:’ is like ‘E:’ but also expands
     strftime(3) specifiers.  ‘S:’, ‘W:’ or ‘P:’ will loop over each
     session, window or pane and insert the format once for each.  For
     windows and panes, two comma-separated formats may be given: the
     second is used for the current window or active pane.  For example,
     to get a list of windows formatted like the status line:

           #{W:#{E:window-status-format} ,#{E:window-status-current-format} }

     ‘N:’ checks if a window (without any suffix or with the ‘w’ suffix)
     or a session (with the ‘s’ suffix) name exists, for example
     ‘`N/w:foo`’ is replaced with 1 if a window named ‘foo’ exists.

     A prefix of the form ‘s/foo/bar/:’ will substitute ‘foo’ with ‘bar’
     throughout.  The first argument may be an extended regular
     expression and a final argument may be ‘i’ to ignore case, for
     example ‘s/a(.)/\1x/i:’ would change ‘abABab’ into ‘bxBxbx’.

     In addition, the last line of a shell command's output may be
     inserted using ‘#()’.  For example, ‘#(uptime)’ will insert the
     system's uptime.  When constructing formats, tmux does not wait for
     ‘#()’ commands to finish; instead, the previous result from running
     the same command is used, or a placeholder if the command has not
     been run before.  If the command hasn't exited, the most recent
     line of output will be used, but the status line will not be
     updated more than once a second.  Commands are executed with the
     tmux global environment set (see the GLOBAL AND SESSION ENVIRONMENT
     section).

     An ‘l’ specifies that a string should be interpreted literally and
     not expanded.  For example ‘#{l:#{?pane_in_mode,yes,no}}’ will be
     replaced by ‘#{?pane_in_mode,yes,no}’.

     The following variables are available, where appropriate:

     Variable name          Alias    Replaced with
     active_window_index             Index of active window in session
     alternate_on                    1 if pane is in alternate screen
     alternate_saved_x               Saved cursor X in alternate screen
     alternate_saved_y               Saved cursor Y in alternate screen
     buffer_created                  Time buffer created
     buffer_name                     Name of buffer
     buffer_sample                   Sample of start of buffer
     buffer_size                     Size of the specified buffer in
                                     bytes
     client_activity                 Time client last had activity
     client_cell_height              Height of each client cell in
                                     pixels
     client_cell_width               Width of each client cell in pixels
     client_control_mode             1 if client is in control mode
     client_created                  Time client created
     client_discarded                Bytes discarded when client behind
     client_flags                    List of client flags
     client_height                   Height of client
     client_key_table                Current key table
     client_last_session             Name of the client's last session
     client_name                     Name of client
     client_pid                      PID of client process
     client_prefix                   1 if prefix key has been pressed
     client_readonly                 1 if client is readonly
     client_session                  Name of the client's session
     client_termfeatures             Terminal features of client, if any
     client_termname                 Terminal name of client
     client_termtype                 Terminal type of client, if
                                     available
     client_tty                      Pseudo terminal of client
     client_utf8                     1 if client supports UTF-8
     client_width                    Width of client
     client_written                  Bytes written to client
     command                         Name of command in use, if any
     command_list_alias              Command alias if listing commands
     command_list_name               Command name if listing commands
     command_list_usage              Command usage if listing commands
     config_files                    List of configuration files loaded
     copy_cursor_line                Line the cursor is on in copy mode
     copy_cursor_word                Word under cursor in copy mode
     copy_cursor_x                   Cursor X position in copy mode
     copy_cursor_y                   Cursor Y position in copy mode
     current_file                    Current configuration file
     cursor_character                Character at cursor in pane
     cursor_flag                     Pane cursor flag
     cursor_x                        Cursor X position in pane
     cursor_y                        Cursor Y position in pane
     history_bytes                   Number of bytes in window history
     history_limit                   Maximum window history lines
     history_size                    Size of history in lines
     hook                            Name of running hook, if any
     hook_pane                       ID of pane where hook was run, if
                                     any
     hook_session                    ID of session where hook was run,
                                     if any
     hook_session_name               Name of session where hook was run,
                                     if any
     hook_window                     ID of window where hook was run, if
                                     any
     hook_window_name                Name of window where hook was run,
                                     if any
     host                   #H       Hostname of local host
     host_short             #h       Hostname of local host (no domain
                                     name)
     insert_flag                     Pane insert flag
     keypad_cursor_flag              Pane keypad cursor flag
     keypad_flag                     Pane keypad flag
     last_window_index               Index of last window in session
     line                            Line number in the list
     mouse_all_flag                  Pane mouse all flag
     mouse_any_flag                  Pane mouse any flag
     mouse_button_flag               Pane mouse button flag
     mouse_line                      Line under mouse, if any
     mouse_sgr_flag                  Pane mouse SGR flag
     mouse_standard_flag             Pane mouse standard flag
     mouse_utf8_flag                 Pane mouse UTF-8 flag
     mouse_word                      Word under mouse, if any
     mouse_x                         Mouse X position, if any
     mouse_y                         Mouse Y position, if any
     origin_flag                     Pane origin flag
     pane_active                     1 if active pane
     pane_at_bottom                  1 if pane is at the bottom of
                                     window
     pane_at_left                    1 if pane is at the left of window
     pane_at_right                   1 if pane is at the right of window
     pane_at_top                     1 if pane is at the top of window
     pane_bg                         Pane background colour
     pane_bottom                     Bottom of pane
     pane_current_command            Current command if available
     pane_current_path               Current path if available
     pane_dead                       1 if pane is dead
     pane_dead_status                Exit status of process in dead pane
     pane_fg                         Pane foreground colour
     pane_format                     1 if format is for a pane
     pane_height                     Height of pane
     pane_id                #D       Unique pane ID
     pane_in_mode                    1 if pane is in a mode
     pane_index             #P       Index of pane
     pane_input_off                  1 if input to pane is disabled
     pane_last                       1 if last pane
     pane_left                       Left of pane
     pane_marked                     1 if this is the marked pane
     pane_marked_set                 1 if a marked pane is set
     pane_mode                       Name of pane mode, if any
     pane_path                       Path of pane (can be set by
                                     application)
     pane_pid                        PID of first process in pane
     pane_pipe                       1 if pane is being piped
     pane_right                      Right of pane
     pane_search_string              Last search string in copy mode
     pane_start_command              Command pane started with
     pane_synchronized               1 if pane is synchronized
     pane_tabs                       Pane tab positions
     pane_title             #T       Title of pane (can be set by
                                     application)
     pane_top                        Top of pane
     pane_tty                        Pseudo terminal of pane
     pane_width                      Width of pane
     pid                             Server PID
     rectangle_toggle                1 if rectangle selection is
                                     activated
     scroll_position                 Scroll position in copy mode
     scroll_region_lower             Bottom of scroll region in pane
     scroll_region_upper             Top of scroll region in pane
     search_match                    Search match if any
     search_present                  1 if search started in copy mode
     selection_active                1 if selection started and changes
                                     with the cursor in copy mode
     selection_end_x                 X position of the end of the
                                     selection
     selection_end_y                 Y position of the end of the
                                     selection
     selection_present               1 if selection started in copy mode
     selection_start_x               X position of the start of the
                                     selection
     selection_start_y               Y position of the start of the
                                     selection
     session_activity                Time of session last activity
     session_alerts                  List of window indexes with alerts
     session_attached                Number of clients session is
                                     attached to
     session_attached_list           List of clients session is attached
                                     to
     session_created                 Time session created
     session_format                  1 if format is for a session
     session_group                   Name of session group
     session_group_attached          Number of clients sessions in group
                                     are attached to
     session_group_attached_list     List of clients sessions in group
                                     are attached to
     session_group_list              List of sessions in group
     session_group_many_attached     1 if multiple clients attached to
                                     sessions in group
     session_group_size              Size of session group
     session_grouped                 1 if session in a group
     session_id                      Unique session ID
     session_last_attached           Time session last attached
     session_many_attached           1 if multiple clients attached
     session_marked                  1 if this session contains the
                                     marked pane
     session_name           #S       Name of session
     session_path                    Working directory of session
     session_stack                   Window indexes in most recent order
     session_windows                 Number of windows in session
     socket_path                     Server socket path
     start_time                      Server start time
     version                         Server version
     window_active                   1 if window active
     window_active_clients           Number of clients viewing this
                                     window
     window_active_clients_list      List of clients viewing this window
     window_active_sessions          Number of sessions on which this
                                     window is active
     window_active_sessions_list     List of sessions on which this
                                     window is active
     window_activity                 Time of window last activity
     window_activity_flag            1 if window has activity
     window_bell_flag                1 if window has bell
     window_bigger                   1 if window is larger than client
     window_cell_height              Height of each cell in pixels
     window_cell_width               Width of each cell in pixels
     window_end_flag                 1 if window has the highest index
     window_flags           #F       Window flags with # escaped as ##
     window_raw_flags                Window flags with nothing escaped
     window_format                   1 if format is for a window
     window_height                   Height of window
     window_id                       Unique window ID
     window_index           #I       Index of window
     window_last_flag                1 if window is the last used
     window_layout                   Window layout description, ignoring
                                     zoomed window panes
     window_linked                   1 if window is linked across
                                     sessions
     window_linked_sessions          Number of sessions this window is
                                     linked to
     window_linked_sessions_list     List of sessions this window is
                                     linked to
     window_marked_flag              1 if window contains the marked
                                     pane
     window_name            #W       Name of window
     window_offset_x                 X offset into window if larger than
                                     client
     window_offset_y                 Y offset into window if larger than
                                     client
     window_panes                    Number of panes in window
     window_silence_flag             1 if window has silence alert
     window_stack_index              Index in session most recent stack
     window_start_flag               1 if window has the lowest index
     window_visible_layout           Window layout description,
                                     respecting zoomed window panes
     window_width                    Width of window
     window_zoomed_flag              1 if window is zoomed
     wrap_flag                       Pane wrap flag

STYLES         top

     tmux offers various options to specify the colour and attributes of
     aspects of the interface, for example status-style for the status
     line.  In addition, embedded styles may be specified in format
     options, such as status-left, by enclosing them in ‘#[’ and ‘]’.

     A style may be the single term ‘default’ to specify the default
     style (which may come from an option, for example status-style in
     the status line) or a space or comma separated list of the
     following:

     fg=colour
             Set the foreground colour.  The colour is one of: black,
             red, green, yellow, blue, magenta, cyan, white; if
             supported the bright variants brightred, brightgreen,
             brightyellow; colour0 to colour255 from the 256-colour set;
             default for the default colour; terminal for the terminal
             default colour; or a hexadecimal RGB string such as
             ‘#ffffff’.

     bg=colour
             Set the background colour.

     none    Set no attributes (turn off any active attributes).

     acs, bright (or bold), dim, underscore, blink, reverse, hidden,
             italics, overline, strikethrough, double-underscore,
             curly-underscore, dotted-underscore, dashed-underscore
             Set an attribute.  Any of the attributes may be prefixed
             with ‘no’ to unset.  acs is the terminal alternate
             character set.

     align=left (or noalign), align=centre, align=right
             Align text to the left, centre or right of the available
             space if appropriate.

     fill=colour
             Fill the available space with a background colour if
             appropriate.

     list=on, list=focus, list=left-marker, list=right-marker, nolist
             Mark the position of the various window list components in
             the status-format option: list=on marks the start of the
             list; list=focus is the part of the list that should be
             kept in focus if the entire list won't fit in the available
             space (typically the current window); list=left-marker and
             list=right-marker mark the text to be used to mark that
             text has been trimmed from the left or right of the list if
             there is not enough space.

     push-default, pop-default
             Store the current colours and attributes as the default or
             reset to the previous default.  A push-default affects any
             subsequent use of the default term until a pop-default.
             Only one default may be pushed (each push-default replaces
             the previous saved default).

     range=left, range=right, range=window|X, norange
             Mark a range in the status-format option.  range=left and
             range=right are the text used for the ‘StatusLeft’ and
             ‘StatusRight’ mouse keys.  range=window|X is the range for
             a window passed to the ‘Status’ mouse key, where ‘X’ is a
             window index.

     Examples are:

           fg=yellow bold underscore blink
           bg=black,fg=default,noreverse

NAMES AND TITLES         top

     tmux distinguishes between names and titles.  Windows and sessions
     have names, which may be used to specify them in targets and are
     displayed in the status line and various lists: the name is the
     tmux identifier for a window or session.  Only panes have titles.
     A pane's title is typically set by the program running inside the
     pane using an escape sequence (like it would set the xterm(1)
     window title in X(7)).  Windows themselves do not have titles - a
     window's title is the title of its active pane.  tmux itself may
     set the title of the terminal in which the client is running, see
     the set-titles option.

     A session's name is set with the new-session and rename-session
     commands.  A window's name is set with one of:

     1.      A command argument (such as -n for new-window or
             new-session).

     2.      An escape sequence (if the allow-rename option is turned
             on):

                   $ printf '\033kWINDOW_NAME\033\\'

     3.      Automatic renaming, which sets the name to the active
             command in the window's active pane.  See the
             automatic-rename option.

     When a pane is first created, its title is the hostname.  A pane's
     title can be set via the title setting escape sequence, for
     example:

           $ printf '\033]2;My Title\033\\'

     It can also be modified with the select-pane -T command.

GLOBAL AND SESSION ENVIRONMENT         top

     When the server is started, tmux copies the environment into the
     global environment; in addition, each session has a session
     environment.  When a window is created, the session and global
     environments are merged.  If a variable exists in both, the value
     from the session environment is used.  The result is the initial
     environment passed to the new process.

     The update-environment session option may be used to update the
     session environment from the client when a new session is created
     or an old reattached.  tmux also initialises the TMUX variable with
     some internal information to allow commands to be executed from
     inside, and the TERM variable with the correct terminal setting of
     ‘screen’.

     Variables in both session and global environments may be marked as
     hidden.  Hidden variables are not passed into the environment of
     new processes and instead can only be used by tmux itself (for
     example in formats, see the FORMATS section).

     Commands to alter and view the environment are:

     set-environment [-Fhgru] [-t target-session] name [value]
                   (alias: setenv)
             Set or unset an environment variable.  If -g is used, the
             change is made in the global environment; otherwise, it is
             applied to the session environment for target-session.  If
             -F is present, then value is expanded as a format.  The -u
             flag unsets a variable.  -r indicates the variable is to be
             removed from the environment before starting a new process.
             -h marks the variable as hidden.

     show-environment [-hgs] [-t target-session] [variable]
                   (alias: showenv)
             Display the environment for target-session or the global
             environment with -g.  If variable is omitted, all variables
             are shown.  Variables removed from the environment are
             prefixed with ‘-’.  If -s is used, the output is formatted
             as a set of Bourne shell commands.  -h shows hidden
             variables (omitted by default).

STATUS LINE         top

     tmux includes an optional status line which is displayed in the
     bottom line of each terminal.

     By default, the status line is enabled and one line in height (it
     may be disabled or made multiple lines with the status session
     option) and contains, from left-to-right: the name of the current
     session in square brackets; the window list; the title of the
     active pane in double quotes; and the time and date.

     Each line of the status line is configured with the status-format
     option.  The default is made of three parts: configurable left and
     right sections (which may contain dynamic content such as the time
     or output from a shell command, see the status-left,
     status-left-length, status-right, and status-right-length options
     below), and a central window list.  By default, the window list
     shows the index, name and (if any) flag of the windows present in
     the current session in ascending numerical order.  It may be
     customised with the window-status-format and
     window-status-current-format options.  The flag is one of the
     following symbols appended to the window name:

           Symbol    Meaning
           *         Denotes the current window.
           -         Marks the last window (previously selected).
           #         Window activity is monitored and activity has been
                                detected.
           !         Window bells are monitored and a bell has occurred
                                in the window.
           ~         The window has been silent for the monitor-silence
                                interval.
           M         The window contains the marked pane.
           Z         The window's active pane is zoomed.

     The # symbol relates to the monitor-activity window option.  The
     window name is printed in inverted colours if an alert (bell,
     activity or silence) is present.

     The colour and attributes of the status line may be configured, the
     entire status line using the status-style session option and
     individual windows using the window-status-style window option.

     The status line is automatically refreshed at interval if it has
     changed, the interval may be controlled with the status-interval
     session option.

     Commands related to the status line are as follows:

     clear-prompt-history [-T prompt-type]
                   (alias: clrphist)
             Clear status prompt history for prompt type prompt-type.
             If -T is omitted, then clear history for all types.  See
             command-prompt for possible values for prompt-type.

     command-prompt [-1FikN] [-I inputs] [-p prompts] [-t target-client]
             [-T prompt-type] [template]
             Open the command prompt in a client.  This may be used from
             inside tmux to execute commands interactively.

             If template is specified, it is used as the command.  With
             -F, template is expanded as a format.

             If present, -I is a comma-separated list of the initial
             text for each prompt.  If -p is given, prompts is a comma-
             separated list of prompts which are displayed in order;
             otherwise a single prompt is displayed, constructed from
             template if it is present, or ‘:’ if not.

             Before the command is executed, the first occurrence of the
             string ‘%%’ and all occurrences of ‘%1’ are replaced by the
             response to the first prompt, all ‘%2’ are replaced with
             the response to the second prompt, and so on for further
             prompts.  Up to nine prompt responses may be replaced (‘%1’
             to ‘%9’).  ‘%%%’ is like ‘%%’ but any quotation marks are
             escaped.

             -1 makes the prompt only accept one key press, in this case
             the resulting input is a single character.  -k is like -1
             but the key press is translated to a key name.  -N makes
             the prompt only accept numeric key presses.  -i executes
             the command every time the prompt input changes instead of
             when the user exits the command prompt.

             -T tells tmux the prompt type.  This affects what
             completions are offered when Tab is pressed.  Available
             types are: ‘command’, ‘search’, ‘target’ and
             ‘window-target’.

             The following keys have a special meaning in the command
             prompt, depending on the value of the status-keys option:

                   Function                             vi        emacs
                   Cancel command prompt                q         Escape
                   Delete from cursor to start of word            C-w
                   Delete entire command                d         C-u
                   Delete from cursor to end            D         C-k
                   Execute command                      Enter     Enter
                   Get next command from history                  Down
                   Get previous command from history              Up
                   Insert top paste buffer              p         C-y
                   Look for completions                 Tab       Tab
                   Move cursor left                     h         Left
                   Move cursor right                    l         Right
                   Move cursor to end                   $         C-e
                   Move cursor to next word             w         M-f
                   Move cursor to previous word         b         M-b
                   Move cursor to start                 0         C-a
                   Transpose characters                           C-t

     confirm-before [-p prompt] [-t target-client] command
                   (alias: confirm)
             Ask for confirmation before executing command.  If -p is
             given, prompt is the prompt to display; otherwise a prompt
             is constructed from command.  It may contain the special
             character sequences supported by the status-left option.

             This command works only from inside tmux.

     display-menu [-O] [-c target-client] [-t target-pane] [-T title]
             [-x position] [-y position] name key command ...
                   (alias: menu)
             Display a menu on target-client.  target-pane gives the
             target for any commands run from the menu.

             A menu is passed as a series of arguments: first the menu
             item name, second the key shortcut (or empty for none) and
             third the command to run when the menu item is chosen.  The
             name and command are formats, see the FORMATS and STYLES
             sections.  If the name begins with a hyphen (-), then the
             item is disabled (shown dim) and may not be chosen.  The
             name may be empty for a separator line, in which case both
             the key and command should be omitted.

             -T is a format for the menu title (see FORMATS).

             -x and -y give the position of the menu.  Both may be a row
             or column number, or one of the following special values:

                   Value    Flag    Meaning
                   C        Both    The centre of the terminal
                   R        -x      The right side of the terminal
                   P        Both    The bottom left of the pane
                   M        Both    The mouse position
                   W        Both    The window position on the status
                                    line
                   S        -y      The line above or below the status
                                    line

             Or a format, which is expanded including the following
             additional variables:

                   Variable name                 Replaced with
                   popup_centre_x                Centered in the client
                   popup_centre_y                Centered in the client
                   popup_height                  Height of menu or popup
                   popup_mouse_bottom            Bottom of at the mouse
                   popup_mouse_centre_x          Horizontal centre at
                                                 the mouse
                   popup_mouse_centre_y          Vertical centre at the
                                                 mouse
                   popup_mouse_top               Top at the mouse
                   popup_mouse_x                 Mouse X position
                   popup_mouse_y                 Mouse Y position
                   popup_pane_bottom             Bottom of the pane
                   popup_pane_left               Left of the pane
                   popup_pane_right              Right of the pane
                   popup_pane_top                Top of the pane
                   popup_status_line_y           Above or below the
                                                 status line
                   popup_width                   Width of menu or popup
                   popup_window_status_line_x    At the window position
                                                 in status line
                   popup_window_status_line_y    At the status line
                                                 showing the window

             Each menu consists of items followed by a key shortcut
             shown in brackets.  If the menu is too large to fit on the
             terminal, it is not displayed.  Pressing the key shortcut
             chooses the corresponding item.  If the mouse is enabled
             and the menu is opened from a mouse key binding, releasing
             the mouse button with an item selected chooses that item
             and releasing the mouse button without an item selected
             closes the menu.  -O changes this behaviour so that the
             menu does not close when the mouse button is released
             without an item selected the menu is not closed and a mouse
             button must be clicked to choose an item.

             The following keys are also available:

                   Key    Function
                   Enter  Choose selected item
                   Up     Select previous item
                   Down   Select next item
                   q      Exit menu

     display-message [-aINpv] [-c target-client] [-d delay] [-t
             target-pane] [message]
                   (alias: display)
             Display a message.  If -p is given, the output is printed
             to stdout, otherwise it is displayed in the target-client
             status line for up to delay milliseconds.  If delay is not
             given, the message-time option is used; a delay of zero
             waits for a key press.  ‘N’ ignores key presses and closes
             only after the delay expires.  The format of message is
             described in the FORMATS section; information is taken from
             target-pane if -t is given, otherwise the active pane.

             -v prints verbose logging as the format is parsed and -a
             lists the format variables and their values.

             -I forwards any input read from stdin to the empty pane
             given by target-pane.

     display-popup [-CE] [-c target-client] [-d start-directory] [-h
             height] [-t target-pane] [-w width] [-x position] [-y
             position] [shell-command]
                   (alias: popup)
             Display a popup running shell-command on target-client.  A
             popup is a rectangular box drawn over the top of any panes.
             Panes are not updated while a popup is present.

             -E closes the popup automatically when shell-command exits.
             Two -E closes the popup only if shell-command exited with
             success.

             -x and -y give the position of the popup, they have the
             same meaning as for the display-menu command.  -w and -h
             give the width and height - both may be a percentage
             (followed by ‘%’).  If omitted, half of the terminal size
             is used.

             The -C flag closes any popup on the client.

     show-prompt-history [-T prompt-type]
                   (alias: showphist)
             Display status prompt history for prompt type prompt-type.
             If -T is omitted, then show history for all types.  See
             command-prompt for possible values for prompt-type.

BUFFERS         top

     tmux maintains a set of named paste buffers.  Each buffer may be
     either explicitly or automatically named.  Explicitly named buffers
     are named when created with the set-buffer or load-buffer commands,
     or by renaming an automatically named buffer with set-buffer -n.
     Automatically named buffers are given a name such as ‘buffer0001’,
     ‘buffer0002’ and so on.  When the buffer-limit option is reached,
     the oldest automatically named buffer is deleted.  Explicitly named
     buffers are not subject to buffer-limit and may be deleted with the
     delete-buffer command.

     Buffers may be added using copy-mode or the set-buffer and
     load-buffer commands, and pasted into a window using the
     paste-buffer command.  If a buffer command is used and no buffer is
     specified, the most recently added automatically named buffer is
     assumed.

     A configurable history buffer is also maintained for each window.
     By default, up to 2000 lines are kept; this can be altered with the
     history-limit option (see the set-option command above).

     The buffer commands are as follows:

     choose-buffer [-NZr] [-F format] [-f filter] [-K key-format] [-O
             sort-order] [-t target-pane] [template]
             Put a pane into buffer mode, where a buffer may be chosen
             interactively from a list.  Each buffer is shown on one
             line.  A shortcut key is shown on the left in brackets
             allowing for immediate choice, or the list may be navigated
             and an item chosen or otherwise manipulated using the keys
             below.  -Z zooms the pane.  The following keys may be used
             in buffer mode:

                   Key    Function
                   Enter  Paste selected buffer
                   Up     Select previous buffer
                   Down   Select next buffer
                   C-s    Search by name or content
                   n      Repeat last search
                   t      Toggle if buffer is tagged
                   T      Tag no buffers
                   C-t    Tag all buffers
                   p      Paste selected buffer
                   P      Paste tagged buffers
                   d      Delete selected buffer
                   D      Delete tagged buffers
                   e      Open the buffer in an editor
                   f      Enter a format to filter items
                   O      Change sort field
                   r      Reverse sort order
                   v      Toggle preview
                   q      Exit mode

             After a buffer is chosen, ‘%%’ is replaced by the buffer
             name in template and the result executed as a command.  If
             template is not given, "paste-buffer -b '%%'" is used.

             -O specifies the initial sort field: one of ‘time’, ‘name’
             or ‘size’.  -r reverses the sort order.  -f specifies an
             initial filter: the filter is a format - if it evaluates to
             zero, the item in the list is not shown, otherwise it is
             shown.  If a filter would lead to an empty list, it is
             ignored.  -F specifies the format for each item in the list
             and -K a format for each shortcut key; both are evaluated
             once for each line.  -N starts without the preview.  This
             command works only if at least one client is attached.

     clear-history [-t target-pane]
                   (alias: clearhist)
             Remove and free the history for the specified pane.

     delete-buffer [-b buffer-name]
                   (alias: deleteb)
             Delete the buffer named buffer-name, or the most recently
             added automatically named buffer if not specified.

     list-buffers [-F format] [-f filter]
                   (alias: lsb)
             List the global buffers.  -F specifies the format of each
             line and -f a filter.  Only buffers for which the filter is
             true are shown.  See the FORMATS section.

     load-buffer [-w] [-b buffer-name] [-t target-client] path
                   (alias: loadb)
             Load the contents of the specified paste buffer from path.
             If -w is given, the buffer is also sent to the clipboard
             for target-client using the xterm(1) escape sequence, if
             possible.

     paste-buffer [-dpr] [-b buffer-name] [-s separator] [-t
             target-pane]
                   (alias: pasteb)
             Insert the contents of a paste buffer into the specified
             pane.  If not specified, paste into the current one.  With
             -d, also delete the paste buffer.  When output, any
             linefeed (LF) characters in the paste buffer are replaced
             with a separator, by default carriage return (CR).  A
             custom separator may be specified using the -s flag.  The
             -r flag means to do no replacement (equivalent to a
             separator of LF).  If -p is specified, paste bracket
             control codes are inserted around the buffer if the
             application has requested bracketed paste mode.

     save-buffer [-a] [-b buffer-name] path
                   (alias: saveb)
             Save the contents of the specified paste buffer to path.
             The -a option appends to rather than overwriting the file.

     set-buffer [-aw] [-b buffer-name] [-t target-client] [-n
             new-buffer-name] data
                   (alias: setb)
             Set the contents of the specified buffer to data.  If -w is
             given, the buffer is also sent to the clipboard for
             target-client using the xterm(1) escape sequence, if
             possible.  The -a option appends to rather than overwriting
             the buffer.  The -n option renames the buffer to
             new-buffer-name.

     show-buffer [-b buffer-name]
                   (alias: showb)
             Display the contents of the specified buffer.

MISCELLANEOUS         top

     Miscellaneous commands are as follows:

     clock-mode [-t target-pane]
             Display a large clock.

     if-shell [-bF] [-t target-pane] shell-command command [command]
                   (alias: if)
             Execute the first command if shell-command returns success
             or the second command otherwise.  Before being executed,
             shell-command is expanded using the rules specified in the
             FORMATS section, including those relevant to target-pane.
             With -b, shell-command is run in the background.

             If -F is given, shell-command is not executed but
             considered success if neither empty nor zero (after formats
             are expanded).

     lock-server
                   (alias: lock)
             Lock each client individually by running the command
             specified by the lock-command option.

     run-shell [-bC] [-d delay] [-t target-pane] [shell-command]
                   (alias: run)
             Execute shell-command or (with -C) a tmux command in the
             background without creating a window.  Before being
             executed, shell-command is expanded using the rules
             specified in the FORMATS section.  With -b, the command is
             run in the background.  -d waits for delay seconds before
             starting the command.  If -C is not given, any output to
             stdout is displayed in view mode (in the pane specified by
             -t or the current pane if omitted) after the command
             finishes.  If the command fails, the exit status is also
             displayed.

     wait-for [-L | -S | -U] channel
                   (alias: wait)
             When used without options, prevents the client from exiting
             until woken using wait-for -S with the same channel.  When
             -L is used, the channel is locked and any clients that try
             to lock the same channel are made to wait until the channel
             is unlocked with wait-for -U.

EXIT MESSAGES         top

     When a tmux client detaches, it prints a message.  This may be one
     of:

     detached (from session ...)
             The client was detached normally.

     detached and SIGHUP
             The client was detached and its parent sent the SIGHUP
             signal (for example with detach-client -P).

     lost tty
             The client's tty(4) or pty(4) was unexpectedly destroyed.

     terminated
             The client was killed with SIGTERM.

     too far behind
             The client is in control mode and became unable to keep up
             with the data from tmux.

     exited  The server exited when it had no sessions.

     server exited
             The server exited when it received SIGTERM.

     server exited unexpectedly
             The server crashed or otherwise exited without telling the
             client the reason.

TERMINFO EXTENSIONS         top

     tmux understands some unofficial extensions to terminfo(5).  It is
     not normally necessary to set these manually, instead the
     terminal-features option should be used.

     AX      An existing extension that tells tmux the terminal supports
             default colours.

     Bidi    Tell tmux that the terminal supports the VTE bidirectional
             text extensions.

     Cs, Cr  Set the cursor colour.  The first takes a single string
             argument and is used to set the colour; the second takes no
             arguments and restores the default cursor colour.  If set,
             a sequence such as this may be used to change the cursor
             colour from inside tmux:

                   $ printf '\033]12;red\033\\'

     Cmg, Clmg, Dsmg, Enmg
             Set, clear, disable or enable DECSLRM margins.  These are
             set automatically if the terminal reports it is VT420
             compatible.

     Dsbp, Enbp
             Disable and enable bracketed paste.  These are set
             automatically if the XT capability is present.

     Dseks, Eneks
             Disable and enable extended keys.

     Dsfcs, Enfcs
             Disable and enable focus reporting.  These are set
             automatically if the XT capability is present.

     Rect    Tell tmux that the terminal supports rectangle operations.

     Smol    Enable the overline attribute.

     Smulx   Set a styled underscore.  The single parameter is one of: 0
             for no underscore, 1 for normal underscore, 2 for double
             underscore, 3 for curly underscore, 4 for dotted underscore
             and 5 for dashed underscore.

     Setulc, ol
             Set the underscore colour or reset to the default.  The
             argument is (red * 65536) + (green * 256) + blue where each
             is between 0 and 255.

     Ss, Se  Set or reset the cursor style.  If set, a sequence such as
             this may be used to change the cursor to an underline:

                   $ printf '\033[4 q'

             If Se is not set, Ss with argument 0 will be used to reset
             the cursor style instead.

     Sync    Start (parameter is 1) or end (parameter is 2) a
             synchronized update.

     Tc      Indicate that the terminal supports the ‘direct colour’ RGB
             escape sequence (for example, \e[38;2;255;255;255m).

             If supported, this is used for the initialize colour escape
             sequence (which may be enabled by adding the ‘initc’ and
             ‘ccc’ capabilities to the tmux terminfo(5) entry).

             This is equivalent to the RGB terminfo(5) capability.

     Ms      Store the current buffer in the host terminal's selection
             (clipboard).  See the set-clipboard option above and the
             xterm(1) man page.

     XT      This is an existing extension capability that tmux uses to
             mean that the terminal supports the xterm(1) title set
             sequences and to automatically set some of the capabilities
             above.

CONTROL MODE         top

     tmux offers a textual interface called control mode.  This allows
     applications to communicate with tmux using a simple text-only
     protocol.

     In control mode, a client sends tmux commands or command sequences
     terminated by newlines on standard input.  Each command will
     produce one block of output on standard output.  An output block
     consists of a %begin line followed by the output (which may be
     empty).  The output block ends with a %end or %error.  %begin and
     matching %end or %error have three arguments: an integer time (as
     seconds from epoch), command number and flags (currently not used).
     For example:

           %begin 1363006971 2 1
           0: ksh* (1 panes) [80x24] [layout b25f,80x24,0,0,2] @2 (active)
           %end 1363006971 2 1

     The refresh-client -C command may be used to set the size of a
     client in control mode.

     In control mode, tmux outputs notifications.  A notification will
     never occur inside an output block.

     The following notifications are defined:

     %client-detached client
             The client has detached.

     %client-session-changed client session-id name
             The client is now attached to the session with ID
             session-id, which is named name.

     %continue pane-id
             The pane has been continued after being paused (if the
             pause-after flag is set, see refresh-client -A).

     %exit [reason]
             The tmux client is exiting immediately, either because it
             is not attached to any session or an error occurred.  If
             present, reason describes why the client exited.

     %extended-output pane-id age ... : value
             New form of %output sent when the pause-after flag is set.
             age is the time in milliseconds for which tmux had buffered
             the output before it was sent.  Any subsequent arguments up
             until a single ‘:’ are for future use and should be
             ignored.

     %layout-change window-id window-layout window-visible-layout
             window-flags
             The layout of a window with ID window-id changed.  The new
             layout is window-layout.  The window's visible layout is
             window-visible-layout and the window flags are
             window-flags.

     %output pane-id value
             A window pane produced output.  value escapes non-printable
             characters and backslash as octal \xxx.

     %pane-mode-changed pane-id
             The pane with ID pane-id has changed mode.

     %pause pane-id
             The pane has been paused (if the pause-after flag is set).

     %session-changed session-id name
             The client is now attached to the session with ID
             session-id, which is named name.

     %session-renamed name
             The current session was renamed to name.

     %session-window-changed session-id window-id
             The session with ID session-id changed its active window to
             the window with ID window-id.

     %sessions-changed
             A session was created or destroyed.

     %subscription-changed name session-id window-id window-index
             pane-id ... : value
             The value of the format associated with subscription name
             has changed to value.  See refresh-client -B.  Any
             arguments after pane-id up until a single ‘:’ are for
             future use and should be ignored.

     %unlinked-window-add window-id
             The window with ID window-id was created but is not linked
             to the current session.

     %window-add window-id
             The window with ID window-id was linked to the current
             session.

     %window-close window-id
             The window with ID window-id closed.

     %window-pane-changed window-id pane-id
             The active pane in the window with ID window-id changed to
             the pane with ID pane-id.

     %window-renamed window-id name
             The window with ID window-id was renamed to name.

ENVIRONMENT         top

     When tmux is started, it inspects the following environment
     variables:

     EDITOR    If the command specified in this variable contains the
               string ‘vi’ and VISUAL is unset, use vi-style key
               bindings.  Overridden by the mode-keys and status-keys
               options.

     HOME      The user's login directory.  If unset, the passwd(5)
               database is consulted.

     LC_CTYPE  The character encoding locale(1).  It is used for two
               separate purposes.  For output to the terminal, UTF-8 is
               used if the -u option is given or if LC_CTYPE contains
               "UTF-8" or "UTF8".  Otherwise, only ASCII characters are
               written and non-ASCII characters are replaced with
               underscores (‘_’).  For input, tmux always runs with a
               UTF-8 locale.  If en_US.UTF-8 is provided by the
               operating system it is used and LC_CTYPE is ignored for
               input.  Otherwise, LC_CTYPE tells tmux what the UTF-8
               locale is called on the current system.  If the locale
               specified by LC_CTYPE is not available or is not a UTF-8
               locale, tmux exits with an error message.

     LC_TIME   The date and time format locale(1).  It is used for
               locale-dependent strftime(3) format specifiers.

     PWD       The current working directory to be set in the global
               environment.  This may be useful if it contains symbolic
               links.  If the value of the variable does not match the
               current working directory, the variable is ignored and
               the result of getcwd(3) is used instead.

     SHELL     The absolute path to the default shell for new windows.
               See the default-shell option for details.

     TMUX_TMPDIR
               The parent directory of the directory containing the
               server sockets.  See the -L option for details.

     VISUAL    If the command specified in this variable contains the
               string ‘vi’, use vi-style key bindings.  Overridden by
               the mode-keys and status-keys options.

FILES         top

     ~/.tmux.conf               Default tmux configuration file.
     @SYSCONFDIR@/tmux.conf     System-wide configuration file.

EXAMPLES         top

     To create a new tmux session running vi(1):

           $ tmux new-session vi

     Most commands have a shorter form, known as an alias.  For new-
     session, this is new:

           $ tmux new vi

     Alternatively, the shortest unambiguous form of a command is
     accepted.  If there are several options, they are listed:

           $ tmux n
           ambiguous command: n, could be: new-session, new-window, next-window

     Within an active session, a new window may be created by typing
     ‘C-b c’ (Ctrl followed by the ‘b’ key followed by the ‘c’ key).

     Windows may be navigated with: ‘C-b 0’ (to select window 0), ‘C-b
     1’ (to select window 1), and so on; ‘C-b n’ to select the next
     window; and ‘C-b p’ to select the previous window.

     A session may be detached using ‘C-b d’ (or by an external event
     such as ssh(1) disconnection) and reattached with:

           $ tmux attach-session

     Typing ‘C-b ?’ lists the current key bindings in the current
     window; up and down may be used to navigate the list or ‘q’ to exit
     from it.

     Commands to be run when the tmux server is started may be placed in
     the ~/.tmux.conf configuration file.  Common examples include:

     Changing the default prefix key:

           set-option -g prefix C-a
           unbind-key C-b
           bind-key C-a send-prefix

     Turning the status line off, or changing its colour:

           set-option -g status off
           set-option -g status-style bg=blue

     Setting other options, such as the default command, or locking
     after 30 minutes of inactivity:

           set-option -g default-command "exec /bin/ksh"
           set-option -g lock-after-time 1800

     Creating new key bindings:

           bind-key b set-option status
           bind-key / command-prompt "split-window 'exec man %%'"
           bind-key S command-prompt "new-window -n %1 'ssh %1'"

SEE ALSO         top

     pty(4)

AUTHORS         top

     Nicholas Marriott <nicholas.marriott@gmail.com>

COLOPHON         top

     This page is part of the tmux (terminal multiplexer) project.
     Information about the project can be found at
     https://tmux.github.io/.  If you have a bug report for this manual
     page, send it to tmux-users@googlegroups.com.  This page was
     obtained from the project's upstream Git repository
     ⟨https://github.com/tmux/tmux.git⟩ on 2021-06-20.  (At that time,
     the date of the most recent commit that was found in the repository
     was 2021-06-18.)  If you discover any rendering problems in this
     HTML version of the page, or you believe there is a better or more
     up-to-date source for the page, or you have corrections or
     improvements to the information in this COLOPHON (which is not part
     of the original manual page), send a mail to man-pages@man7.org

BSD                           June 20, 2021                          BSD

Pages that refer to this page: logind.conf(5)user_caps(5)pty(7)