opts4

UNIX[1].shell范例精解(第4版)_code

#!/bin/bash
# Program: opts4
# Using getopts -- Fourth try --
while getopts xyz: arguments 2>/dev/null
do
	case $arguments  in
	x) echo "you entered -x as an option .";;
	y) echo "you entered -y as an option." ;;
	z) echo "you entered -z as an option."
	    echo "\$OPTARG is $OPTARG.";;
	\?) echo "Usage opts4 [-xy] [-z  argument]"
	    exit 1;;
	esac
done
echo "	The number of arguments passed was $(( $OPTIND - 1 ))"