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## VIEWING systemd INFORMATION

* `systemctl list-dependencies` Show a unit’s dependencies * `systemctl list-sockets` List sockets and what activates * `systemctl list-jobs` View active systemd jobs * `systemctl list-unit-files` See unit files and their states * `systemctl list-units` Show if units are loaded/active * `systemctl get-default` List default target (like run level)

## WORKING WITH SERVICES

* `systemctl stop service` Stop a running service * `systemctl start service` Start a service * `systemctl restart service` Restart a running service * `systemctl reload service` Reload all config files in service * `systemctl daemon-reload` Must run to reload changed unit files * `systemctl status service` See if service is running/enabled * `systemctl –failed Shows` services that failed to run * `systemctl reset-failed` Resets any units from failed state * `systemctl enable service` Enable a service to start on boot * `systemctl disable service` Disable service–won’t start at boot * `systemctl show service` Show properties of a service (or other unit) * `systemctl edit service` Create snippit to drop in unit file * `systemctl edit –full service` Edit entire unit file for service * `systemctl -H` host status network Run any systemctl command remotely

## CHANGING SYSTEM STATES

* `systemctl reboot` Reboot the system (reboot.target) * `systemctl poweroff` Power off the system (poweroff.target) * `systemctl emergency` Put in emergency mode (emergency.target) * `systemctl default` Back to default target (multi-user.target)

## VIEWING LOG MESSAGES

* `journalctl` Show all collected log messages * `journalctl -u` network.service See network service messages * `journalctl -f` Follow messages as they appear * `journalctl -k` Show only kernel messages