aflag=
bflag=
while getopts ab: name
do
case $name in
a) aflag=1 ;;
b) bflag=1
bval=$OPTARG;;
?) echo Usage: $0 [-a] [-b value] args
exit 2;;
esac
done
if [ ! -z "$aflag" ] ; then echo -a specified ; fi
if [ ! -z "$bflag" ] ; then echo -b $bval specified ; fi
if [ "$OPTIND" -gt 1 ]
then
shift $(( $OPTIND - 1 ))
fi
echo remaining args: "$*"
exit 0