1、获取默认的target
[root@centos7 ~]# systemctl get-default
graphical.target
2、取消图形界面
[root@centos7 ~]# systemctl set-default multi-user.target
Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/multi-user.target.
3、图形界面启动
[root@centos7 ~]# systemctl set-default graphical.target
Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/graphical.target.
4、设置target 之后重启机器
reboot
来源：51CTO
作者：小精灵linux
链接：https://blog.51cto.com/13718453/2468380