Hi Firstly a warm wish to all of u guys a very happy new year 2008. I have written a script that will check the total usage of network from eth0 and total number of concurrent connection established from eth0. The syntax of usage of this code is following perl network.pl eth0 and it produces the output in the following manner. Average traffic on eth0 is: 0.00 kbytes/second Average traffic per connection on eth0 is: 0.00 kbytes/second The code is as following

#!/usr/bin/perl
use strict;

my $dev = shift || 'eth0';

my $traf1 = get_curr_traf();
select(undef, undef, undef, 2);
my $traf2 = get_curr_traf();

my ($conn) = grep {/connections established/} `netstat -ts`;
$conn = (split/\s+/,$conn)[1];


my $trafavg = ($traf2 - $traf1) / (2*1024);
printf "%s%10.2f%14s\n","Average traffic on $dev is:", $trafavg, "kbyt
+es/second";

my $traf_per_conn = $trafavg / $conn;
printf "%s%7.2f%14s\n","Average traffic per connection on $dev is:", $
+traf_per_conn, "kbytes/second";

sub get_curr_traf
{
open DEV,'/proc/net/dev' or die $!;
my ($in,$out);
while(<DEV>) {
next unless /$dev:\d+/;
($in,$out) = (split)[0,8];
$in = (split/:/,$in)[1];

}
close DEV;
return $in+$out;
}
[download]

but if i want to check network bandwidth consumption by a particular application i.e. oracle or java by using this script or some other script written in perl then how to do this? Thanks & Regards in Advance Anirban Adhikary.

Edited by castaway, added code tags