:insert #!/usr/bin/env bash #=============================================================================== # # FILE: # USAGE: # DESCRIPTION: # OPTIONS: # REQUIREMENTS: # NOTES: # AUTHOR: C Hawley # CREATED: # REVISION: # #=============================================================================== set -o nounset # Treat unset variables as an error # Check for empty argument if [ -z "${1:-}" ]; then arg="undefined" else arg=$1 fi .