From: Carl Youngblood <carl@...>
Date: 2003-12-20T08:11:53+09:00
Subject: 'Daemonizing' a script

I got this code from Webrick::Daemon that is supposed to turn a ruby 
script into a daemon.  Though I don't fully understand it, I guess that 
means that it detaches it from the terminal that called it.  The thing 
is, when I run the script without the daemonizing code it works fine, 
but when I add the following code it silently croaks.  Does anybody know 
what might be going wrong?

Thanks,
Carl Youngblood

#------------------------------

# the following lines "daemonize" this script
exit!(0) if fork
Process::setsid
exit!(0) if fork
Dir::chdir("/")
File::umask(0)
[ STDIN, STDOUT, STDERR ].each{|io|
     io.reopen("/dev/null", "r+")
}

# This is a session storage daemon which can be shared by multiple FCGI
# processes. It's just a hash which is enabled for DRb access.

require 'drb'
require 'include/localsettings'

session_data = Hash.new
DRb.start_service("druby://127.0.0.1:#{SESSION_PORT.to_s}", session_data)
DRb.thread.join