--*=*) properties="$properties -Dfess.${1#--}"
           shift 1
           ;;
      --*) [ $# -le 1 ] && {
                echo "Option requires an argument: '$1'."
                shift
                continue
            }
           properties="$properties -Dfess.${1#--}=$2"
           shift 2
           ;;
      *) ARGV="$ARGV $1" ; shift
    esac
done

# Parse any command line options.