#!/bin/sh

GETOPT=$(getopt -o ab:c:: -l a-long,b-long:,c-long:: -n 'example.busybox' -- "$@")
[ $? == 0 ] || exit 1
eval set -- "$GETOPT"
while true ; do
	case $1 in
		-a|--a-long) echo "Option a" ; shift ;;
		-b|--b-long) echo "Option b, argument `$2'" ; shift 2 ;;
		-c|--c-long)
			case "$2" in
				"") echo "Option c, no argument"; shift 2 ;;
				*)  echo "Option c, argument `$2'" ; shift 2 ;;
			esac ;;
		--) shift ; break ;;
		*) echo "Internal error!" ; exit 1 ;;
	esac
done