#!/bin/sh
#useage: sh testcase.sh -d /tmp/ -r file

while getopts dr: opt
do
   echo "OPT: $opt";   # output: OPT: d
   exit # just exit for debugging purpose

   case $opt in
     d) OPTION="${OPTION}d";;
     r) OPTION2="${OPTION}r";ra="$OPTARG";;
    \?) usage; exit 1;;
   esac

done