getopt-example.sh

#!/bin/bash

ARGS=$(getopt -o a:b -l "ay:,bee:,dry-run" -n "cli.sh" -- "$@");
eval set -- "$ARGS";

while (("$#")); do
  case "$1" in
    -a|--ay)
      shift;
      if [ -n "$1" ]; then
        ay=$1
        shift;
      fi
      ;;
    -b|--bee)
      shift;
      if [ -n "$1" ]; then
        bee=$1
        shift;
      fi
      ;;
    --dry-run)
      dryrun=1
      shift;
      ;;
    --)
      shift;
      break;
      ;;
  esac
done


if [ ! -z $dryrun ]
then
  echo 'DRY RUN!'
  echo 'Explain what will happen without making any changes'
  exit;
else
  echo 'PROCEED'
  echo "  Ay: $ay"
  echo "  Bee: $bee"
  echo "  Other: $@"
fi