hi, I have written a daemon example. But i dont know why it is not running. When i debugged using print statment, it is exiting after the (open STDIN, '/dev/null' or die "Can't read /dev/null: $!";) statement in the daemonize method. Can you please help me 
#!/usr/bin/perl
# daemonize the program
&daemonize;
$| = 1;


while(1)
{
        print "\nIn the While\n";
        open(MYFILE,'>>temp.txt');
        print MYFILE "Hello Sri\n";
        close(MYFILE);
}


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: $!";
    open STDERR, '>>/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: $!";
    umask 0;
}

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Edit: Code tags added by Corion

In reply to Perl daemon exiting without warning by sktemkar

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