What you probably want to do, is fork off the desired script, with SIG(CHLD) ignored, so it won't wait. Then, you close STDOUT and other filehandles in your cgi script, and the web server should close it off.

See Merlyn's Column 20

or this simpler example:

#!/usr/bin/perl 
use warnings;
use strict;

$| = 1;         # need either this or to explicitly flush stdout, etc.
# before forking
print "Content-type: text/plain\n\n";
print "Going to start the fork now\n";
if ( !defined(my $pid = fork())) {
print STDERR "fork error\n";
exit(1);
} elsif ($pid == 0) {
# child
close(STDOUT);close(STDIN);close(STDERR);
exec('./fork-long-process-test-process');     # lengthy processing
} else {
# parent
print "forked child \$pid= $pid\n";
exit 0;
}
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I'm actual not at work anymore that I could try this but tomorrow I'll try this for sure. I really appreciate your help. Thanks

I had some similar code but I must have done some mistakes. Your codes seems perfect on the first look. Did a few tests and always the exactly expected result.

I'd now try to go on with my project getting this running. In case that I'll note something is not doing what expected, may I just reply here? :-)

Thanks you Sir!

Firstly thanks for the reply, in case that I had the same behavior on Win/Linux, and it looks like the script by zentara works perfectly on Linux (because fork is implemented in two different ways in Win/Linux - my actual information's) I'll give it a try. I'd prefer Linux anyway.