From: Alex Young <alex@...>
Date: 2010-12-14T02:44:33+09:00
Subject: Re: Daemons

Iain Barnett wrote in post #968104:
> Hi,
>
> I've got a process I'd like to daemonize, a call the twitter search API
> ever 10 minutes or so. There seem to be a few gems that purport to make
> this process easier and I was wondering if anyone could recommend (or
> tell me to avoid) any? Or just any tips to watch out for.
>

The Daemons gem is good, but if you don't need anything fancy then
it's not much code to do it yourself:


    # File lib/webrick/server.rb, line 28
    def Daemon.start
      exit!(0) if fork
      Process::setsid
      exit!(0) if fork
      Dir::chdir("/")
      File::umask(0)
      STDIN.reopen("/dev/null")
      STDOUT.reopen("/dev/null", "w")
      STDERR.reopen("/dev/null", "w")
      yield if block_given?
    end

--
Alex

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