SYSTEMD-RUN-GENERATOR(8) systemd-run-generator SYSTEMD-RUN-GENERATOR(8)
systemd-run-generator - Generator for invoking commands specified on the kernel command line as system service
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).
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.)
systemd(1), systemctl(1), kernel-command-line(7), systemd-nspawn(7), systemd.unit(5), systemd.service(5)
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 page was obtained from the project's upstream Git repository ⟨https://github.com/systemd/systemd.git⟩ on 2021-08-27. (At that time, the date of the most recent commit that was found in the repository was 2021-08-27.) 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 email@example.com systemd 249 SYSTEMD-RUN-GENERATOR(8)
Pages that refer to this page: kernel-command-line(7)