#!/bin/bash

# basic manual argument parsing

usage() {
  echo "Usage: $0 [--foo FOO] [-v]" 1>&2
}

foo=""
verbose=false
while [[ $# -gt 0 ]]; do
  case "$1" in
  --foo)
    shift
    foo="$1"
    shift
    ;;
  -v | --verbose)
    shift
    verbose=true
    ;;
  -help)
    usage
    exit 0
    ;;
  -*)
    usage
    exit 1
    ;;
  *)
    break
    ;;
  esac
done