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62 lines
1.7 KiB
Org Mode
62 lines
1.7 KiB
Org Mode
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:PROPERTIES:
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:ID: 80866258-4fd5-4ddc-b3e4-00fa3d3372d3
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:END:
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#+title: Command line: systemctl
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#+date: 2021-07-27 13:47:34 +08:00
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#+date_modified: 2021-07-27 14:06:35 +08:00
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#+language: en
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#+property: header_args :eval no
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The go-to command to manage units in a systemd-ful system.
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For full details, you can view the =systemctl.1= manual page.
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* Synopsis
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#+begin_src shell
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systemctl [OPTIONS...] COMMAND [COMMAND_ARGS...] [COMMAND_OPTIONS...]
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#+end_src
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* Options
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- =--user= runs the binary in user mode with the user-specific options and load-path.
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See [[id:c7edff80-6dea-47fc-8ecd-e43b5ab8fb1e][systemd at user-level]] for more details.
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- =--help= is an obvious one.
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It prints a detailed help section of the command.
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* Subcommands
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- =enable UNIT= and =disable UNIT= enables and disables units.
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It mainly adds the unit activation at startup.
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+ =--now= starts/stops the unit.
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It is the equivalent of =systemctl {enable,disable} UNIT && systemctl {start,stop} UNIT=.
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Pretty handy if you intend to add the unit at startup and want to use it now.
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- =start UNIT= and =stop UNIT= starts and stops the unit, respectively.
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Though, this doesn't activate
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- =restart UNIT= restarts the given unit.
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This also reloads with the modified changes of the unit.
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- In some cases where restarting the unit isn't enough, =daemon-reload= will reload the daemon with the modified units.
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systemd does not have reload-at-change for its unit.
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That is, if a unit is modified, systemd will not run the modified version until reloaded.
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- =show-environment= shows the environment variables of the system.
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- =list-units [PATTERN...]= is self-explanatory ;p.
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- =is-active PATTERN...= prints the status of the matched unit and exits successfully if it's active.
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