查看桌面环境状态:sudo service lightdm status
启动桌面环境:sudo service lightdm start
停止桌面环境:sudo service lightdm stop
重启桌面环境:sudo service lightdm restart
开机进入命令模式
1. LEVLE 3
- systemctl set-default multi-user.target
2. LEVEL 5
- systemctl set-default graphical.target