I did something similar working at the South Pole about 20-25 years ago: rm -rf * .some-extension Missed the extra space, hit Enter, lost several days of work

I did something similar working at the South Pole about 20-25 years ago: rm -rf * .some-extension Missed the extra space, hit Enter, lost several days of work. Much smaller blast radius, but still an expensive mistake for a trip like that. No, it wasn't in source code control - a few of us might have been using CVS at that time (this was before Git's time), but apparently I wasn't, or I wouldn't remember the episode decades later.