Using Thor subcommands

myapp.rb

require 'thor'
require "sub"

class MyApp < Thor
  desc "parentcommand SUBCOMMAND", "Some Parent Command"
  subcommand "sub", Sub
end

MyApp.start

sub.rb

class Sub < Thor
  desc "command", "an example task"
  def command
    puts "I'm a thor task!"
  end
end

Thank you! perfect example. short, consie and clear