I accidentally untarred archive intended to be extracted in root directory, which among others included some files for /etc directory.
I went on to rm -rv ~/etc, but I quickly typed rm -rv /etc instead, and hit enter, while using a root account.
Next time:
ls ~/etc rm -rv !$Or press
alt+.to paste final argument of previous commandThis is also dangerous because you could run the second command by accident later when browsing command history
with tab you can expand the !$, should be a zsh thing