When I first started using Linux and wanted to do some housecleaning, I did "rm -r (asterix) in a folder. Cleaned up everything, no prob. Then went to some more

When I first started using Linux and wanted to do some housecleaning, I did "rm -r (asterix) in a folder. Cleaned up everything, no prob. Then went to some more folders, hit the up arrow on my keyboard fast to get to a command I had used before. Hit 'enter' before my brain realized I had landed on rm -r (asterix) and not the right command. Never used that command again.