systemd-run-generator

SYSTEMD-RUN-GENERATOR(8)     systemd-run-generator    SYSTEMD-RUN-GENERATOR(8)

NAME
       systemd-run-generator - Generator for invoking commands specified on
       the kernel command line as system service

SYNOPSIS
       /lib/systemd/system-generators/systemd-run-generator

DESCRIPTION
       systemd-run-generator is a generator that reads the kernel command line
       and understands three options:

       If the systemd.run= option is specified and followed by a command line,
       a unit named kernel-command-line.service is generated for it and booted
       into. The service has Type=oneshot set, and has SuccessAction=exit and
       FailureAction=exit configured by default, thus ensuring that the system
       is shut down as soon as the command completes. The exit status of the
       command line is propagated to the invoking container manager, if this
       applies (which might propagate this further, to the calling shell --
       e.g.  systemd-nspawn(7) does this). If this option is used multiple
       times the unit file will contain multiple ExecStart= lines, to execute
       all commands in order. The command is started as regular service, i.e.
       with DefaultDependencies= on.

       Use systemd.run_success_action= and systemd.run_failure_action= to
       tweak how to react to the process completing. In particular assigning
       "none" will leave the system running after the command completes. For
       further details on supported arguments, see systemd.unit(5).

       systemd-run-generator implements systemd.generator(7).

EXAMPLE
       Use a command like the following to add a user to the user database
       inside a container run with systemd-nspawn(7):

           # systemd-nspawn -D mycontainer -b systemd.run='"adduser test"'

       (Note the requirement for double quoting in the command line above. The
       first level of quoting ('') is processed and removed by the command
       shell used to invoke systemd-nspawn. The second level of quoting ("")
       is propagated to the kernel command line of the container and processed
       and removed by systemd-run-generator. Both together make sure both
       words of the specified command line adduser test end up in the
       generated unit file together and are neither split apart by the command
       shell nor by the generator.)

SEE ALSO
       systemd(1), systemctl(1), kernel-command-line(7), systemd-nspawn(7),
       systemd.unit(5), systemd.service(5)

systemd 245                                           SYSTEMD-RUN-GENERATOR(8)