From: Steve Litt <slitt@...>
Date: 2005-12-18T13:56:04+09:00
Subject: Spawning

Hi all,

My umenu program has a utility called ufork.pl, whose job it is to 
run an X program in the background in such a way that even if the 
process that ran it is killed, the X program continues to live. I 
want to translate it to Ruby, but I can't find an equivalent to 
Perl's setsid anywhere in the Kernel module. Here's the code:

#!/usr/bin/perl -w
use strict;

use POSIX qw(setsid);

sub launch(@) {
    my(@args) = @_;
    unless (fork) {
        setsid;             # set child process to new session
        unless (fork) {     # Create a grandchild
            close STDIN;    # close std files
            close STDOUT;
            close STDERR;
            exec @args;     # exec the x program
        }
    }
    sleep(1);
}

launch(@ARGV);

=======================

Anyone know an equivalent to setsid? Anyone ever do this in Ruby 
before? I think it's a fairly common riff.

Thanks

SteveT



-- 
Steve Litt
http://www.troubleshooters.com
slitt@troubleshooters.com