else
echo "Error: Unknown image name for option argument -${OPTARG}" >&2;
usage
- exit 1
fi
;;
\?)
# Invalid option
echo "Error: Unknown or invalid option argument for -${OPTARG}" >&2;
usage
- exit 1;;
+ ;;
:)
echo "Error: Missing option argument for -${OPTARG}" >&2;
usage
- exit 1;;
+ ;;
*|h)
usage
;;