bash-getopts

#!/usr/bin/env/bash
while getopts ':hpstu:' opt; do
    case $opt in
        p)
            ENV="prod"
            ;;
        s)
            ENV="test"
            ;;
        t)
            ENV="int"
            ;;
        u)
            RUSER="$OPTARG"
            ;;
        \?|h)
            echo "$0 -p|-s|-t -u <user> file [file] ..."
            exit 1
            ;;
    esac
done
shift $((OPTIND-1))
FILES=( "${@}" )