Being fully posix compliant

[5c0tt]

I can't get these lines to work and not error, but I would like to move from bash to sh and be more cross platform

#!/bin/bash
# set -o nounset  # Referencing undefined variables (which default to "")
# set -o errexit  # Ignoring failing commands
#05/29/14 — 11:38:02 AM Added above commands and changed to sh instead of
# bash to be more POSIX'y