parse last line of every */*.np file

[sysadmin-cookbook] / recepies / netpipe-tcp / np2graphviz.pl

#!/usr/bin/perl

use warnings;
use strict;

foreach my $file ( glob '*/*.np' ) {

        my $direction = $file;
        $direction =~ s/\.np$//;
        my ( $from, $to ) = split(m{/},$direction,2);

        my $line = `tail -1 $file`;
        $line =~ s{^\s+}{};
        $line =~ s{\s+$}{};
        my ( $size, $speed, $rtt ) = split(/\s+/, $line);

        warn "$from -> $to | $size | $speed | $rtt\n";
}