The SL command easter egg

In this Linux tip, we’re going to look at what happens on many Linux systems when someone mistypes “ls” - typing “sl” instead. What you can anticipating seeing (provided the sl command has been installed with one of the commands shown below is a rather entertaining image - a steam locomotive that drives across your screen.
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[@mnoxman]

$ make love
make: *** No targets specified and no makefile found. Stop.

[@mintoo2cool]

lol.