NAME | SYNOPSIS | DESCRIPTION | OPTIONS | ENVIRONMENT VARIABLES | EXAMPLES | SEE ALSO | COLOPHON

SYSTEMD-ACTIVATE(8)           systemd-activate           SYSTEMD-ACTIVATE(8)

NAME         top

       systemd-activate - Test socket activation of daemons

SYNOPSIS         top

       /usr/lib/systemd/systemd-activate [OPTIONS...] daemon [OPTIONS...]

DESCRIPTION         top

       systemd-activate can be used to launch a socket-activated daemon from
       the command line for testing purposes. It can also be used to launch
       single instances of the daemon per connection (inetd-style).

       The daemon to launch and its options should be specified after
       options intended for systemd-activate.

       If the -a option is given, file descriptor of the connection will be
       used as the standard input and output of the launched process.
       Otherwise, standard input and output will be inherited, and sockets
       will be passed through file descriptors 3 and higher. Sockets passed
       through $LISTEN_FDS to systemd-activate will be passed through to the
       daemon, in the original positions. Other sockets specified with
       --listen will use consecutive descriptors.

OPTIONS         top

       -l address, --listen=address
           Listen on this address. Takes a string like "2000" or
           "127.0.0.1:2001".

       -a, --accept
           Launch a separate instance of daemon per connection and pass the
           connection socket as standard input and standard output.

       -E VAR[=VALUE], --setenv=VAR[=VALUE]
           Add this variable to the environment of the launched process. If
           VAR is followed by "=", assume that it is a variable–value pair.
           Otherwise, obtain the value from the environment of
           systemd-activate itself.

       --fdname=NAME
           Specify a name for the activation file descriptors. This is
           equivalent to setting FileDescriptorName= in socket unit files,
           and enables use of sd_listen_fds_with_names(3).

       -h, --help
           Print a short help text and exit.

       --version
           Print a short version string and exit.

ENVIRONMENT VARIABLES         top

       $LISTEN_FDS, $LISTEN_PID, $LISTEN_FDNAMES
           See sd_listen_fds(3).

       $SYSTEMD_LOG_TARGET, $SYSTEMD_LOG_LEVEL, $SYSTEMD_LOG_COLOR,
       $SYSTEMD_LOG_LOCATION
           Same as in systemd(1).

EXAMPLES         top

       Example 1. Run an echo server on port 2000

           $ /usr/lib/systemd/systemd-activate -l 2000 -a cat

       Example 2. Run a socket-activated instance of systemd-journal-
       gatewayd(8)

           $ /usr/lib/systemd/systemd-activate -l 19531 /usr/lib/systemd/systemd-journal-gatewayd

SEE ALSO         top

       systemd(1), systemd.socket(5), systemd.service(5), sd_listen_fds(3),
       sd_listen_fds_with_names(3), cat(1)

COLOPHON         top

       This page is part of the systemd (systemd system and service manager)
       project.  Information about the project can be found at 
       ⟨http://www.freedesktop.org/wiki/Software/systemd⟩.  If you have a bug
       report for this manual page, see 
       ⟨http://www.freedesktop.org/wiki/Software/systemd/#bugreports⟩.  This
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       to man-pages@man7.org

systemd 228                                              SYSTEMD-ACTIVATE(8)