Originally published at: https://www.cyberciti.biz/open-source/command-line-hacks/linux-unix-desktop-fun-sl-a-mirror-version-of-ls/
One of the most common mistakes is typing sl instead of ls command. I set up an alias, i.e., alias sl=ls; but then you may miss out the steam train with a whistle. sl is a joke software or classic UNIX game. It is a steam locomotive runs across your screen if you type “sl”…