noble (8) systemd-run-generator.8.gz

Provided by: systemd_255.4-1ubuntu8.5_amd64 bug

NAME

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

SYNOPSIS

       /usr/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)