If I'm breaking any rules, apologies.

I know, labeling something a repost is a lead weight, but I'm a fan of full disclosure. I posted this topic two years ago and I thoroughly enjoyed reading all the replies, I even learned a few things. Time has passed, and I figure some of you out there will have some new and interesting stories to share, so tell me:

So I was thinking of silly things I’ve done that pseudo-broke my system, or made me think I had a broken system. Like the time I put the cmd :

exit

in my ~/.bash_aliases file and I had to open a text editor to fix it because that broke all the terminals on my machine.

I’m curious what other silly things users have done to confuse themselves.

Op Op.