I did something like this once only more dramatic. Not that long into a new employer I blew away the entire directory structure of our file based financial system during mid-day processing. Now that was exciting. Felt like running out the back door never to return. Was in the wrong directory and thought I was blowing away something else.
del *.* /s
A quick Y to the question are you sure? (of course, I hate being questioned
Thankfully it was Novell and I could recover all the stuff - 1 file at a time. Friggen Gates still doesn't give you recover on their servers...