class Cmd
  attr_reader :output, :pid, :status
  
  def initialize(cmd_line)
    IO.popen(cmd_line) do |f|
      @output = f.readlines
      @pid, @status = Process.wait2
    end
  end
  
  def run?
    !!@status
  end
  
  protected
  
    def method_missing(sym, *args)
      @status.__send__(sym, *args)
    end
end