Admittedly, my first response was on the fly, but I dug deeper and tried this:

#!/usr/bin/perl

use strict;
use warnings;
use diagnostics;
use IPC::Open3;
use POSIX 'setsid';

sub daemonize {
    chdir '/'               or die "Can't chdir to /: $!";
    open STDIN, '/dev/null' or die "Can't read /dev/null: $!";
    open STDOUT, '>/dev/null' or die "Can't write to /dev/null: $!";
    defined( my $pid = fork ) or die "Can't fork: $!";
    exit if $pid;
    setsid or die "Can't start a new session: $!";
    open STDERR, '>&STDOUT' or die "Can't dup stdout: $!";
}

open( SAVE_STDOUT, ">&", STDOUT )
    or die "save stdout failed";
open( DEVNULL, "< /dev/null" ) 
    or die "open /dev/null failed";

open( FH1, "> /dev/null" ) or die "Open /dev/null failed";

&daemonize( *FH1 );

open3( *DEVNULL, *PIPE, undef, "/bin/sh", "-c", <<EOF );
printf "out 1\\nout 2\\nout 3\\n"
printf "err 1\\nerr 2\\nerr 3\\n" >&2
EOF
;

open( STDOUT, ">&", *SAVE_STDOUT ) or die "restore stdout failed: $!";
while(<PIPE>) {
    print "PIPE: ", $_;
}

close(PIPE) or die "close pipe failed";

exit(1);
[download]

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.