Open and close the CentOS graphical interface

1.1 Shell runs init 3 into text mode and closes the associated service (Xserver definitely off)
1.2 Alt+ctrl+f1~f6 to character interface, root login, PS aux|grep/usr/x11r6/bin/x, get X process number,
Kill-9 process number, in fact, it has been to the text interface, there is no need to close X. (This is too rude.)

2. If you want to not enter the X Window after booting:
Edit/etc/inittab
Id:5:initdefault: Change into
Id:3:initdefault:

3. Open the graphical interface in text mode (X window):
Enter in the shell: StartX or init 5

Open and close the CentOS graphical interface