usage()
{
	echo "Usage: `basename $0` [-v] filename" >&2
	echo "-v  verbose mode" >&2
	exit 1
}

trace=false
verbose=false
while getopts f:hxv OPTION; do
	case ${OPTION} in
		h)	sed '1d;s/^# *//;/^$/q' $0; usage;;
		x)	set -x; trace=true;;
		v)	verbose=true;;
		f)	file="${OPTARG}";;
		?)	usage;;
	esac
done
_XPG=1 shift $((${OPTIND} - 1))
test $# -eq 0 && usage