Centos/Red Hat graphical interface and character interface Switch

As you all know, modify the/etc/inittab file and change ID: 5: initdefault to ID: 3:
Initdefault can be used to enter the character interface after startup.

But is there a way to switch between the GUI and the character interface in real time?

The answer is: in the X-Window Graphic operation interface, press "Alt + Ctrl + F1 ~ F6
You can enter the console character operation interface. To return to the graphic interface, press "Alt + Ctrl + F7 ".

The classification of Linux Startup is as follows:

 
0: Shutdown (remember not to set initdefault to 0, because this will make Linux unable to start)

1: single-user mode, just like the security mode in Win9x.

2: multiple users, but not NFS.

3: full multi-user mode, standard operation level.

4: It is generally not used. In some special cases, you can use it to do something.

5: X11, which means entering the X-window system.

6: restart (remember not to set initdefault to 6, because this will make Linux continuously restart ).