From: James Edward Gray II <james@...>
Date: 2010-12-19T03:23:54+09:00
Subject: Re: Independent processes

On Dec 18, 2010, at 12:10 PM, Tasos Laskos wrote:

> I'm having a bit of a problem...
> Is there a way to completely detach child processes?
> 
> What I mean is, if I Kernel.fork() a piece of code and then the parent
> gets killed I want the child to continue running.
> 
> Does anyone have an idea of how to do that?

That's how processes work, with no special action required:

$ cat parent_and_child.rb 
fork do
  5.times do
    puts "Child still running..."
    sleep 1
  end
  puts "Child exiting."
end

2.times do
  puts "Parent still running..."
  sleep 1
end
puts "Parent exiting."
$ ruby parent_and_child.rb 
Parent still running...
Child still running...
Parent still running...
Child still running...
Parent exiting.
Child still running...
$ Child still running...
Child still running...
Child exiting.

James Edward Gray II