Sleeptimer 
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AndrzejL wrote in PCLinuxOS-Forum:
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At this moment Leiche created a very useful package (which should appear in the repository soon btw). 
Its called Sleeptimer. I have tested it. Its a very simple yet extremely useful little app. Fire it up. 
Type in the amount of minutes and click OK. After the time You chose Your computer will shut down. 
Before it will do so You will get a pop-up for 10 seconds that will allow You to cancel the shutdown 
in case You have changed Your mind.

This should be a good option for the users that like to fall asleep while watching a movie on their 
computer and don't want to leave their computer running all night in the same time.

Fire up Sleeptimer. Set it for 120 mins (depends on the movie lenght of source Smiley). Fire up Movie 
Your favorite media player. Watch the video. Fall asleep. Wake up in the morning. Your puter should be 
turned off. Thats as simple as that... I am sure You can find many other ways to use Sleeptimer!
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So what can i say more?
It's licence GPL, and 
Required: bash, yad,

More information can you read under 
http://kellerleiche.bplaced.net/index/sleeptimer.html
only in German.
