how to shutdown the Xwindows from runlevel 3 and 5 without shutting down system
something like endx like the oposite of startx???

There are several ways I can think of:

1. Ctrl+Alt+Backspace

2. "ps -ef | grep X" - look for the pid (the first number) of the line ending with something like "/etc/X11/X ...", then type in "kill <pid>" where <pid> is the pid. (eg. "kill 1203")

3. "killall /etc/X11/X" (this may be different according to where the X executable is.

Also, if it keeps restarting, then comment out the line (usually the last one) in /etc/inittab that starts with "x" . Mine says:

x:5:respawn:/etc/X11/prefdm -nodaem

The "respawn" is telling it to start again after it's killed. You'd want to precede it with a pound sign (#).

Also most desktop or window managers have a logout function.. that will get you out of X.

Just do an su and type in your root password.Then type:
init 3
You will then have to log in again.
Almost forgot!:
the above will kill x and put you in run level 3 ie,the command line.You can get x back by typing startx,but you're better off changing to root and rebooting from the command line:
shutdown -r now
If you do it this way it will boot back into x and you can log out graphically.
lynch

thanks everybody for responce