Hello, I'm running into a strange problem when trying to execute nmap from Perl and fetching its output. The code looks like this: 
my $cmd = "/usr/bin/nmap " . $self->settings . " -oX " . $self->report
+file . " -v " . $self->target . " |";
close STDOUT;
open(F, $cmd);

my $buf = "";
  while(<F>){
    $buf .= $_;
    #do something here
 }

[download]

It works well if the settings attribute is "-sT", but not if it is "-sU". So obivously i thought that it's a nmap problem, but if I print out $cmd and execute it manually it works like a charm.

So my question is, could this be in any way a Perl problem?

In reply to A weird problem while executing nmap and fetching its output by tobbo

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