rm is remove.
-r is recursive
-f is force.
I've learned that "pwd" (show the current directory) was my friend before typing this kind of command.
I also remember my boss, in the open space, suddenly saying "oh crap!
." "Mmm, what ?" "I deleted the jBoss folder instead of the tmp one
". That wasn't mush a problem, we got the folder from the other server and copied it over.