tool.sh

#!/bin/bash

main() {

eval "$(docopts -V - -h - : "$@" <<EOF
Usage: tool [options]

      --page=<page>      Page numbers [default: 10]
      --user=<user>      Username
      --password=<pwd>   Password
      --verbose          Generate verbose messages.
      --help             Show help options.
      --version          Print program version.
----
tool 0.1.0
Copyright (C) 2015 HortonWorks
EOF
)"

if $verbose ; then
    echo "Verbose: true"
    echo "args: ${args[*]}"
fi

if [[ "$user" ]]; then
    echo "USER=$user"
fi

if [[ "${password}" ]] ; then
    echo "PASSWORD=${password}"
fi

echo "page: $page"

}

if ! docotsx -h &> /dev/null ; then 
  echo "Please install docopts via: 'pip install docopts'"
  exit 1
fi

main "$@"