lsipc(1) — Linux manual page


LSIPC(1)                        User Commands                       LSIPC(1)

NAME         top

       lsipc  - show information on IPC facilities currently employed in the

SYNOPSIS         top

       lsipc [options]

DESCRIPTION         top

       lsipc shows information on the System V inter-process communication
       facilities for which the calling process has read access.

OPTIONS         top

       -i, --id id
              Show full details on just the one resource element identified
              by id.  This option needs to be combined with one of the three
              resource options: -m, -q or -s.  It is possible to override
              the default output format for this option with the --list,
              --raw, --json or --export option.

       -g, --global
              Show system-wide usage and limits of IPC resources.  This
              option may be combined with one of the three resource options:
              -m, -q or -s.  The default is to show information about all

       -h, --help
              Display help text and exit.

       -V, --version
              Display version information and exit.

   Resource options
       -m, --shmems
              Write information about active shared memory segments.

       -q, --queues
              Write information about active message queues.

       -s, --semaphores
              Write information about active semaphore sets.

   Output formatting
       -c, --creator
              Show creator and owner.

       -e, --export
              Output data in the format of NAME=VALUE.

       -J, --json
              Use the JSON output format.

       -l, --list
              Use the list output format.  This is the default, except when
              --id is used.

       -n, --newline
              Display each piece of information on a separate line.

              Do not print a header line.

              Don't truncate output.

       -o, --output list
              Specify which output columns to print.  Use --help to get a
              list of all supported columns.

       -b, --bytes
              Print size in bytes rather than in human readable format.

       -r, --raw
              Raw output (no columnation).

       -t, --time
              Write time information.  The time of the last control
              operation that changed the access permissions for all
              facilities, the time of the last msgsnd(2) and msgrcv(2)
              operations on message queues, the time of the last shmat(2)
              and shmdt(2) operations on shared memory, and the time of the
              last semop(2) operation on semaphores.

       --time-format type
              Display dates in short, full or iso format.  The default is
              short, this time format is designed to be space efficient and
              human readable.

       -P, --numeric-perms
              Print numeric permissions in PERMS column.

EXIT STATUS         top

       0      if OK,

       1      if incorrect arguments specified,

       2      if a serious error occurs.

HISTORY         top

       The lsipc utility is inspired by the ipcs utility.

AUTHORS         top

       Ondrej Oprala ⟨⟩
       Karel Zak ⟨⟩

SEE ALSO         top

       ipcmk(1), ipcrm(1), msgrcv(2), msgsnd(2), semget(2), semop(2),
       shmat(2), shmdt(2), shmget(2), sysvipc(7)

AVAILABILITY         top

       The lsipc command is part of the util-linux package and is available
       from Linux Kernel Archive 

COLOPHON         top

       This page is part of the util-linux (a random collection of Linux
       utilities) project.  Information about the project can be found at 
       ⟨⟩.  If you have a
       bug report for this manual page, send it to  This page was obtained from the
       project's upstream Git repository
       ⟨git://⟩ on
       2020-09-18.  (At that time, the date of the most recent commit that
       was found in the repository was 2020-09-15.)  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

util-linux                      November 2015                       LSIPC(1)

Pages that refer to this page: svipc(7)sysvipc(7)