zsh

I posted this as a gist, but I thought a usage tutorial was in order.

Source the file from your .bash_profile (or .zshrc if that's what you're using):
source /path/to/custom/scripts/dice.sh

The contents of the script:

((( This is for *NIX users - so OS X or Linux. If you're on Windows, check out: http://zsh-nt.sourceforge.net )))

Today we will be upgrading (re: changing) our shell from bash to zsh!

More on zsh here: http://zsh.sourceforge.net/FAQ/zshfaq01.html#l3

Why do you need it? Well, you don't technically... but I HIGHLY recommend it.