systemctl

Control the systemd system and service manager. Some subcommands such as disable, status, reboot etc. have their own usage documentation. More information: https://www.freedesktop.org/software/systemd/man/systemctl.html.

• Show all running services:

systemctl status

• List failed units:

systemctl --failed

• Start/Stop/Restart/Reload/Show the status a service:

systemctl {{start|stop|restart|reload|status}} {{unit}}

• Enable/Disable a unit to be started on bootup:

systemctl {{enable|disable}} {{unit}}

• Reload systemd, scan for new or changed units:

systemctl daemon-reload

• Check if a unit is active/enabled/failed:

systemctl {{is-active|is-enabled|is-failed}} {{unit}}

• List all service/socket/automount units filtering by running/failed state:

systemctl list-units {{[-t|--type]}} {{service|socket|automount}} --state {{failed|running}}

• Show the contents & absolute path of a unit file or edit it:

systemctl {{cat|edit}} {{unit}}