Use Case: you need to extract Rails engines from your kitchen sink webapp.

import.rb

#!/usr/bin/env ruby

# Copy this file to the destination project folder

# Example:

# noglob ./import.rb *role* ../../project_source
# => copying app/models/role.rb
# => copying spec/models/role_spec.rb

require 'pathname'
require 'fileutils'

source_project = ARGV[1] || '../../SOURCE_PROJECT'

files_pattern_to_copy = ARGV.first

Dir["#{source_project}/**/#{files_pattern_to_copy}"].each do |file|
  relative_source_project_path = file.gsub source_project, ''
  source_project_dirname = Pathname.new(relative_source_project_path).dirname.to_s

  puts "copying #{file} to #{source_project_dirname}"

  FileUtils.mkdir_p "./#{source_project_dirname}"
  FileUtils.cp_r file, "./#{source_project_dirname}/"
end