HOW do you turn off your Ubuntu?

Answer 1

There are several ways. You can open a console window and type "init 0" (if you're not already root, "sudo init 0" will probably be required instead). There's also a shutdown command in the menu. Also, logging off under some window managers will ask you if you just want to logoff, or if you want to shut down. Finally, pressing the power button on many computers will initiate a soft shutdown (holding the button in for several seconds will do a hard power off; don't do this except in an emergency, as it may corrupt your filesystems).