while getopts :xy:z opt_char; do #repeated

while getopts :xy:z opt_char; do #repeated

case $opt_char in

x) echo $opt_char found

;;

y) echo $opt_char found \

with \"$OPTARG\"

;;

z) echo $opt_char found

;;

*) echo option error index \

$(( $OPTIND - 1 )) = \"$opt_char\"

exit 1

;;

esac

done