Today I accidently made a typo when issuing the ls command on an Ubuntu server. The shell returned:

The application >>sl<< is currently not installed. You can install it using ...

Oh cool! What’s that? A tool named sl ? Let’s have a look what apt-cache show says:

$ apt-cache show sl
...
Description-en: Correct you if you type `sl' by mistake
 Sl is a program that can display animations aimed to correct you
 if you type 'sl' by mistake.
 SL stands for Steam Locomotive.

What’s that? It took my a second to issue

sudo apt-get install sl

Trying it, is up to you 😉 Happy typos!