systemd replaces the SysV init system: services are managed with systemctl, and runlevels map to targets. 1systemctl status <unit> # status of a service. 2systemctl start|stop|restart <unit> # run / stop / restart. 3systemctl enable|disable <unit> # start at boot (or not). 4systemctl isolate multi-user.target # equivalent of runlevel 3. 5systemctl set-default multi-user.target # change the default target. 6systemctl get-default See the Runlevels & Shutdown page for the classic runlevel table.