#!/bin/sh

MESSAGE=Hola

args=`getopt -o m: -- "$@"`
eval set -- "$args"

if test $? != 0
then
	echo Usage: $0 -m message
	exit 1
fi

for i in "$@"
do
	case $i in
	-m) MESSAGE="$2"; shift; shift;;
	--) shift
		;;
	*) echo "$1"
		;;
	esac
done

echo MESSAGE: "$MESSAGE"