Template for ruby script with Gemfile inline and thor to map actions and arguments

gemfile_inline.rb

#!/usr/bin/env ruby

begin
  require "bundler/inline"
rescue LoadError => e
  puts "You should install bundler with >= 1.10.3 version."
  puts "* Current Ruby:    #{`ruby -v`}"
  puts "* Current Bundler: #{`gem list bundler`}"
  puts "* Original Exception: \"#{e.message}\""
  exit 1
end

gemfile(false) do
  source 'https://rubygems.org'
  gem 'thor', '~> 0.19' # http://whatisthor.com
end

class MyCLI < Thor
  class_option :verbose, :type => :boolean, :aliases => :v

  desc "hello NAME", "say hello to NAME"
  option :from, :required => true
  option :yell, :type => :boolean
  def hello(name)
    puts "> saying hello" if options[:verbose]
    output = []
    output << "from: #{options[:from]}" if options[:from]
    output << "Hello #{name}"
    output = output.join("\n")
    puts options[:yell] ? output.upcase : output
    puts "> done saying hello" if options[:verbose]
  end

  desc "goodbye", "say goodbye to the world"
  def goodbye
    puts "> saying goodbye" if options[:verbose]
    puts "Goodbye World"
    puts "> done saying goodbye" if options[:verbose]
  end
end

MyCLI.start(ARGV)