Quote Originally Posted by TheSpider
Hmm, that means i need to know that i want to shut it down automatically when i boot up.
Is there a way to do it if i have already logged in?
Umm, why would it not be possible to always boot like that ? The only difference should be that it doesn't spit out the CD or wait for a keypress when it is shutting down. You still decide when to shut down, either manually of for instance like this (as root) :
Code:
shutdown -h hh:mm
Where hh is the hour of the day and mm the minutes.

Or like this:

Code:
shutdown -h +m
Where m is the number of minutes to run before shutting down.