Well, now you know

http://www.linuxhaxor.net/2007/12/27...do-sudo-rm-rf/

Seriously don't try this at home. Obviously in this video sudo was used because this was a debian based (most likely ubuntu?) system; that discourages login as root. If you are using any other kind of linux system and logged in as root, you won't be even prompt for a password before everything is gone.... gone... just gone...

I always wanted to try this. Maybe I will try this on a virtual machine and post some screen shots.