Rake task to install dot files into home directory as symlinks

Rakefile

require 'rake'

desc "Install dot files as symbolic links"
task :install do
  dots = File.join(Dir.getwd, "home")
  home = Dir.home
  backup = File.join(home, ".backup-dotfiles")
  Dir.mkdir(backup) unless File.directory?(backup)
  files = Dir.entries(dots) - [".", ".."]
  files.each do |file|
    src  = File.join(dots, file)
    dest = File.join(home, file)
    unless File.symlink?(dest)
      if File.exists?(dest)
        puts "Moving existing #{file} to #{backup}"
        system "mv #{dest} #{backup}"
      end
      puts "Linking #{file}"
      system "ln -s #{src} #{dest}"
    end
  end
end