hmmmm.... curiouser and curiouser...

I just did the same thing as jepri and it still DIDNT work!!????

This suggests to me that something about my installation is broken - I am running Perl version 5.004_04 built for sun4-solaris on SunOS 5.6 - Does anyone know what could cause a problem like this with this config?

just in case here is the exact code I ran and the results:

open(MFOUT,">mfout.txt");
while (<STDIN>)
{
 print MFOUT $_;
 print  $_;

}
my @commands = ("ls","ls *","cat a","cat x");
my %running = ();
my $max_jobs = 200;
my $job_count = 0;

while ( @commands || %running )
{
  if ( @commands && ($job_count < $max_jobs))
  {
    my $command = shift(@commands);
    my $pid;
    if ($pid = fork)
    {
         print "Parent Pid $$\n";
         $running{$pid} = $command;
         ++$job_count;
    }
    else
    {
         die "cannot fork: $!" unless defined $pid;
         print "Child Pid $$ $command\n";
         my $rc = system $command;
         exit($rc>>8);
    }
  }
  else
  {
   my $child_pid = wait();
   if (! exists $running{$child_pid})
   {
     warn "Reaped unkown process id $child_pid!!";
   }
   elsif ($?)
   {
     my $rc = $? >> 8;
     warn "Process '$child_pid:$running{$child_pid}' errored with retu
++rn code '
$rc'";
   }
   print "command '$running{$child_pid}' completed\n";
   delete $running{$child_pid};
   --$job_count;
  }
}

[download]
when I ran this with input:
line1
line2
line3
line4

I got the same output on STDOUT, but mfout.txt contained:
line1
line2
line3
line4
line1
line2
line3
line4
line1
line2
line3
line4
line1
line2
line3
line4
line1
line2
line3
line4

In reply to Re: Re: fork and print.. by Anonymous Monk
in thread fork and print.. by Kung

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