Dear Monks,

I'm struggling with autoflush in a Perl program that needs to catch the results of tcpdump running as root. The codes are as shown below. Though I set autoflush of the file handle, TCPDump, to true, it doens't seem working. Really appreciate if any monks can shred some light on this. Many thanks. 

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

use IO::Handle;

my ($Interface, $Multicast, $Port) = ('eth3', '226.1.109.109', '12345'
+);

open (TCPDump,"sudo /usr/sbin/tcpdump -i $Interface host $Multicast 2>
+/dev/null |") || die "Can't open tcpdump : $!";
TCPDump->autoflush(1);

while (<TCPDump>) {
 print "$_";
}

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In reply to Autoflush fails by sophate

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