execute shell command with a timeout

gistfile1.rb

#!/usr/bin/env ruby

require 'timeout'

def exec_with_timeout(cmd, timeout)
  r,w = IO.pipe
  pid = Process.spawn(cmd, {[:err, :out] => w, :pgroup => true})
  w.close

  [begin
    Timeout.timeout(timeout) do
      Process.waitpid(pid, 0)
      $?.exitstatus == 0
    end
  rescue Timeout::Error
    Process.kill(15, -Process.getpgid(pid))
    false
  end, r.read]
end

exec_with_timeout("/path/to/long-running-command", 10)