Next time search also on CPAN :) If you search password on CPAN, you will get the following modules:

1. Crypt::GeneratePassword: generate secure random pronounceable passwords
2. Data::Password: Perl extension for assesing password quality

These modules will give what you need and let you follow merlyn's suggestions. For example:

#!/usr/bin/perl

use strict;
use warnings;
use Crypt::GeneratePassword;
use Data::Password qw(:all);

my $password = Crypt::GeneratePassword::word(8, 8);

$DICTIONARY = 4;
$GROUPS = 1;
$FOLLOWING_KEYBOARD = 1;

print "password $password ";
if (my $check = IsBadPassword($password)) {
  print "not good, because $check\n";
} else {
  print "is good\n";
}
[download]

Ciao, Valerio