How I pranked a work mate with an evil little while true loop.

Wish you could SSH to a host/IP just by typing/pasting it? This command not found handler will let you SSH without typing ssh!

This is a handy way of iterating over variable names and their values in BASH by way of variable dereferencing.

Sometimes you need a little more detail when debugging a bash script than bash -x alone will give you. The following modifies PS4 to contain the line number of each line of output.