Hi,

am trying to run a perl script which will internally start a perl process on background and with nohup. which am doing as below in my perl script 

$cmd = qq(nohup perl.pl &);
system($cmd);

[download]
My problem is it starts with the parent process group.

I have tried to do the below which is not working 

 $cmd = qq{nohup perl.pl &};
my $pid = fork();
if($pid == 0) {
     print STDERR "parent pid=$$ child pid=$pid\n";
 }elsif (defined $pid) {
    print STDERR "child pid=$$ pid=$pid\n";
    # Must do setpgrp as child for nohup and job control stuff...
    setpgrp(0, $$) || die "Cannot do SetGroup\n";
    exec "$cmd" || die "Bad exec $!";
}

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which is not working as expected. Can someone help me in solving this problem or give an idea on how i can proceed.

Update:
In the output we are getting PGRP different from PID 31852 1 31851 18307 /usr/bin/perl ./perl.pl 31854 31852 31851 18307 \_ sleep 1 31852 is different from 31851... i am trying to start the perl.pl in background with PID = PGRP.. if i start the job without Background.. it works as expected but when i start the job on Background(&).

In reply to Run Perl script in perl program with new process group by veshwar

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