切換到第三運行級
systemctl isolate multi-user.target 或 systemctl isolate runlevel3.target
切換到第五運行級別
systemctl isolate graphical.target 或 systemctl isolate runlevel5.target
設(shè)置默認(rèn)第三啟動級別
systemctl set-default multi-user.target
設(shè)置默認(rèn)第五啟動級別
systemctl set-default graphical.target
查看當(dāng)前默認(rèn)的啟動級別
systemctl get-default
