A very simple skript, written in fpc, then rewritten in python. You can type in hours and minutes, and after this specific time, your Ubuntu will be shutdown.
Since Natty, EasyShutdown does integrate into the Launcher-Bar. Take a look at the screenshot, to see what I mean.
If you like more options, grab ComplexShutdown: https:/
To see the tool in action, please take a look at the screenshots.
All bugs Latest bugs reported
Bug #1285020: Doesn't work on Ubuntu 14.04
Reported on 2014-02-26
Bug #1208403: command line option "-s" doesn't work
Reported on 2013-08-05
Bug #1025296: does not run after Ubuntu 12.04 install
Reported on 2012-07-16
Bug #847288: Easyshutdown is not in the path
Reported on 2011-09-11
Bug #806186: OSError: libX11.so: cannot open shared object
Reported on 2011-07-05