Identify OS with Ruby

identify_os.rb

    def idenfity_os
      require 'rbconfig'
      host_os = RbConfig::CONFIG['host_os']
      case host_os
      when /darwin/, /Mac/
        :mac
      when /linux/
        identify_linux_distro
      when /cygwin|mswin|mingw|bccwin|wince|emx/
        :windows
      when /solaris|bsd/
        :unix
      else
        fail "Couldn't recognize OS"
      end
    end

    def identify_linux_distro
      distro = `python -c "import platform; print(platform.dist())"`
      case distro
      when /ubutu/i
        :ubuntu
      else
        :linux
      end
    end