List of all services and their status:service --status-allAnother way:systemctl list-units --type service --all
List just the enabled services systemctl list-units --type service or systemctl -l –type service –all Stop/Start/Restart a service
systemctl restart/start yourservicename Enable/Disable the startup of a service at boot timesystemctl enable/disable yourservicename
Is it enabled?
systemctl is-enabled yourservicename Uninstall/wipe a service
rm /etc/systemd/system/yourservicenamesystemctl daemon-reloadsystemctl reset-failed Find out the dependencies:
systemctl list-dependencies --type service Get the files related to the service:locate yourservicename.service Disable the service and forbids the others from start it
systemctl mask yourservicenamelist systemd unit files and their states (enabled/disabled/etc)
systemctl list-unit-files
To see / set the default runlevel of the system
systemctl get-defaults (set-defaults)
e.g. multi-user.target or graphical.target
systemctl isolate explained: (stolen from internet)multi-user or graphical
usage), you can switch to a "runlevel" by starting the equivalent target
and stopping anything that is not part of the new target - using isolate.systemctl isolate multi-user.target is the modern way to unload the graphic shell, which was done by init 3 previously. You are in runlevel 5 or to be precise in graphical.target. You do runlevel 3 or systemctl isolate multiuser.target. Another way to change target runlevel.
systemctl set-default multi-user.target (then reboot) 