[pdxandi]

Perhaps they meant professionally.

[shric]

Worst professional mistake? Amateurs! I once did rm -rf cvs when I thought I was in my home directory wiping my local checkout. I was actually in the root dir of the repo. We had no backups.

The 90s were such fun; long live distributed source control.

[jaybosamiya]

Well, at least it wasn't as bad as what happened here: https://bbs.archlinux.org/viewtopic.php?id=207549