问BASH函数中的bash getopt

EN

#-------------------------------------------------------------------------------
# Main
#-------------------------------------------------------------------------------
getopt_results=$( getopt -s bash -o e:h --long ENVIRONMENT:,HELP:: -- "$@" )

if test $? != 0
then
    echo "Failed to parse command line unrecognized option" >&2
    Usage
    exit 1
fi

eval set -- "$getopt_results"

while true
do
  case "$1" in
      -e | --ENVIRONMENT)
          ENVIRONMENT="$2"
          if [ ! -f "../properties/static/build_static.${ENVIRONMENT}.properties" -o ! -f "../properties/dynamic/build_dynamic.${ENVIRONMENT}.properties" ]; then
            echo "ERROR: Unable to open properties file for ${ENVIRONMENT}"
            echo "Please check they exist or supply a Correct Environment name"
            Usage
            exit 1
          else
            declare -A props
            readpropsfile "../properties/dynamic/dynamic.${ENVIRONMENT}.properties"
            readpropsfile "../properties/static/static.${ENVIRONMENT}.properties"
          fi
          shift 2
          ;;
      -h | --HELP)
          Usage
          exit 1
     ;;
      --)
         shift
         break
         ;;
      *)
         echo "$0: unparseable option $1"
         Usage
         exit 1
         ;;
  esac
done