Ask HN: What personal little shell aliases, scripts or hacks bring you joy?

`sl` - it's all fun and games until you forget you installed it on a server somewhere and slip up when trying to view a directory on a Centos system somewhere in a closet and start wondering why there's a locomotive scrolling across the screen.

Ask me how I know :P

fzf: https://github.com/junegunn/fzf