Heh that reminds me of my pre-blender days in which I tried to install maya. I couldn't get it working since it was a cracked copy and i tried to download a script that supposedly allowed me to use it. Well, I didn't check what the script itself was, and i dont think at the time i knew anything about changing permissions on things like that. When i tried to run it as user it said "permission denied", so I went to superuser and ran it. Whoops.

The script?

I can't believe that i didnt look over the script first, much less run it as root. I definetly learned my lesson. So another bit of advice: dont run scripts for unknown sources as root, because they will most likely kill your system.

What is the difference between "rm -rf *" and "rm -rf ./*" then?

Ok, I have looked at them properly and they are essentially the same command.