Capture STDOUT

capture_stdout.rb

require 'stringio'
module Kernel
  # Redirect standard out, standard error
  # capture_stdout { any_commands; you_want } => "all output from the commands"
  def capture_stdout
    out = StringIO.new
    $stdout = out
    $stderr = out
    yield
    return out.string
  ensure
    $stdout = STDOUT
    $stderr = STDERR
  end
end