i think you can write less code to do such work (i use winz double quotes: modify it as needed).

I add a sligthly modified version of your second script, that works given a file with hostnames inside (not IPs...)

perl -MSocket -lne "print  inet_ntoa((gethostbyname$_)[4])" local_mach
+ines_names_or_URI.txt

# your's modified
#!/usr/bin/perl
use warnings;
use strict;
use Socket;

my $file = 'ips.txt';

open (my $fh, "<", $file) or die $!;
##my @file = <$fh>;



while (<$fh>) {
  my $uri = $_;
  $uri =~ s/\s+//g;
  my ($name, $aliases, $addrtype, $length, @addrs) = gethostbyname $ur
+i;
  my ($w,$x,$y,$z) =  unpack('C4',$addrs[0]);
  print  "$w.$x.$y.$z\n";

}
[download]

HtH
L*