Did this 'friend' keep your job? Um, I mean 'their' job.
On a destruction side, I've done this at a DR site and it doesn't work well enough the clean a server out usually. I did manage to do a big move once though. We had a scheduled job that was failing with permissions, so we changed it to run as
root and the job worked fine. The problem was that it was to move everything from a relative path to an archive filesystem and being
root, it moved
/dev,
/etc, ..... which made recovery rather difficult, especially when you cannot log on as there are no devices
Well, we learn from our mistakes. We did recover and I kept my job
Robin