rails new としたとき​何がおこるのか​調べようとして​あきらめた

#!/usr/bin/env ruby_executable_hooks
#
# This file was generated by RubyGems.
#
# The application 'railties' is installed as part of a gem, and
# this file is here to facilitate running it.
#

require 'rubygems'

version = ">= 0"

if ARGV.first
  str = ARGV.first
  str = str.dup.force_encoding("BINARY") if str.respond_to? :force_encoding
  if str =~ /\A_(.*)_\z/ and Gem::Version.correct?($1) then
    version = $1
    ARGV.shift
  end
end

gem 'railties', version
load Gem.bin_path('railties', 'rails', version)

#!/usr/bin/env ruby

git_path = File.expand_path('../../../.git', __FILE__)

if File.exist?(git_path)
  railties_path = File.expand_path('../../lib', __FILE__)
  $:.unshift(railties_path)
end
require "rails/cli"

$ locate rails/cli
/home/plonk/.rvm/gems/ruby-2.1.2/gems/railties-4.1.7/lib/rails/cli.rb

require 'rails/app_rails_loader'

# If we are inside a Rails application this method performs an exec and thus
# the rest of this script is not run.
Rails::AppRailsLoader.exec_app_rails

require 'rails/ruby_version_check'
Signal.trap("INT") { puts; exit(1) }

if ARGV.first == 'plugin'
  ARGV.shift
  require 'rails/commands/plugin'
else
  require 'rails/commands/application'
end

$ locate rails/commands/application
/home/plonk/.rvm/gems/ruby-2.1.2/gems/railties-4.1.7/lib/rails/commands/application.rb

require 'rails/generators'
require 'rails/generators/rails/app/app_generator'

module Rails
  module Generators
    class AppGenerator # :nodoc:
      # We want to exit on failure to be kind to other libraries
      # This is only when accessing via CLI
      def self.exit_on_failure?
        true
      end
    end
  end
end

args = Rails::Generators::ARGVScrubber.new(ARGV).prepare!
Rails::Generators::AppGenerator.start args