Hello everyone, I am very new to Perl. Any help would be greatly appreciated because I am stucked here for quite a long time :(

Basically what I am trying to do is:

1. I have a list of IP address in testingIP.txt

2. I want to loop through the text file and find out which IP address is in the net mask that I have specified using a PERL module that I have installed -- Net::Netmask http://search.cpan.org/~muir/Net-Netmask-1.9015/Netmask.pod

Unfortunately, it only works when there is only 1 IP address in testingIP.txt, this is my output for my current code: 


Use of uninitialized value $i in bitwise and (&) at /usr/local/share/p
+erl5/site_perl/5.26/Net/Netmask.pm line 411, <$fh> line 1.
IP address: 192.168.1.1
 is not inside 192.168.1.0/27
Use of uninitialized value $i in bitwise and (&) at /usr/local/share/p
+erl5/site_perl/5.26/Net/Netmask.pm line 411, <$fh> line 2.
IP address: 192.168.1.2
 is not inside 192.168.1.0/27
Use of uninitialized value $i in bitwise and (&) at /usr/local/share/p
+erl5/site_perl/5.26/Net/Netmask.pm line 411, <$fh> line 3.
IP address: 192.168.1.3
 is not inside 192.168.1.0/27
IP address: 192.168.1.4 is inside 192.168.1.0/27

[download]

This is my code 

 

#!/usr/bin/perl

use strict;
use warnings;
use Net::Netmask;

my $filename = 'testingIP.txt';
open(my $fh, '<:encoding(UTF-8)', $filename)
  or die "Could not open file '$filename' $!";

my $block = Net::Netmask->new("192.168.1.0/27");



while (my $row = <$fh>){
    my @row = $row;
    
    for (my $i=0; $i < scalar(@row); $i++){
        if ($block->match($row[$i])){
            print "IP address: $row[$i] is inside $block\n";
        }
        else{
            print "IP address: $row is not inside $block\n";
        }
    }
}

[download]

In reply to Use of uninitialized value $i in bitwise and (&) at <Netmask.pm> by dotowwxo

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