systemctl-isolate
Start the specified unit with its dependencies and stop all others. tldr-pages
On Linux
Linux
Start the specified unit with its dependencies and stop all others. Ignores the units which have IgnoreOnIsolate=yes.
Switch to a target (assumed .target if no extension provided)
systemctl isolate targetIdentifySwitch to graphical target explicitly
systemctl isolate graphical.targetIdentifySwitch to rescue (single-user) mode
systemctl isolate rescue.targetIdentifySwitch to emergency mode
systemctl isolate emergency.targetIdentify