Create a new Ruby project

ruby-new.rb

#!/usr/bin/env ruby

require 'fileutils'

# Set the project name
project_name = ARGV[0]

# Make a directory named after the project
puts "Creating directory #{project_name} as Git repository:"
puts
`git init #{project_name}`

# Change into the project directory
FileUtils.cd project_name do

  # Create .gitignore
  File.open(".gitignore", "w+") do |f|
    f.puts ".DS_Store"
    f.puts ".bundle/"
    f.puts "vendor/"
    f.puts "binstubs/"
  end

  # Create a Gemfile and Rakefile
  puts "\tCreating Gemfile"
  File.open("Gemfile", "w+") do |f|
    f.puts <<-EOS
source :rubygems

gem 'rake'

group :development do
  gem 'yard'
  gem 'guard'
  gem 'yard-guard'
end
group :test do
  gem 'rspec'
  gem 'cucumber'
end
EOS
  end
  puts "\tCreating Rakefile"
  File.open("Rakefile", "w+") do |f|
    f.puts <<-EOS
namespace :test do
  desc 'Run RSpec'
  task :spec do
    bundle exec rspec
  end

  desc 'Run Cucumber'
  task :cucumber do
    bundle exec cucumber
  end

  task :default => 'test:rspec'
end
EOS
  end

  # Create the lib and subsidiary directories
  puts "\tCreating lib directories"
  FileUtils.mkdir_p "lib/#{project_name}/ext"
  # Create the lib/project_name.rb file
  puts "\tCreating lib/#{project_name}.rb"
  `touch lib/#{project_name}.rb`

  # Create the examples directory
  puts "\tCreating examples directory"
  FileUtils.mkdir_p "examples"

  # Create the spec directory
  puts "\tCreating spec directory"
  FileUtils.mkdir_p "spec"
  File.open("spec/spec_helper.rb", "w+") do |f|
    f.puts "require 'lib/#{project_name}'"
  end

  # Create the features directory
  puts "\tCreating features directory"
  FileUtils.mkdir_p "features/step_definitions"
  FileUtils.mkdir_p "features/support"
  `touch features/support/env.rb`

  # Create the docs directory
  puts "\tCreating docs directory"
  FileUtils.mkdir_p "docs"

  # Create README
  puts "\tCreating README"
  File.open("README.md", "w+") do |f|
    f.puts <<-EOS
# #{project_name.capitalize}

Write your README first:
http://tom.preston-werner.com/2010/08/23/readme-driven-development.html

# TODO:

- Set up remote Git repository
- Set up continuous integration jobs
EOS
  end

end

puts
puts "Done."
exit 0