opts4

Advanced Bash&#8722 Scripting Guide An in&#8722 depth exploration of the art of shell scripting Me

#!/bin/sh
# 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 initial value of \$OPTIND is 1.
The final value of \$OPTIND is $OPTIND.
Since this reflects the number of the next command line 
argument,the number of arguments passed was `expr $OPTIND - 1`. "