#!/usr/bin/perl -w

use strict;
use Net::SSH::Perl;
my $user = "username";
my $pass = "password";
my $domain = ".mydomain.com";
my $ssh;
my $host;
my @hosts = qw(host1 host2);

my $lscmd = "ls -ltr";

foreach $host (@hosts){
 print "$host\n";
        $ssh = Net::SSH::Perl->new("$host$domain", protocol => 2, interactive => 0, options => [ "Password Authentication yes" ], (debug=>'true'));

        $ssh->login($user, $pass);
        my ($lsout, $lserr, $lsexit) = $ssh->cmd($lscmd);
 print "lsout = $lsout\n";
 print "lserr = $lserr\n";
 print "lsexit = $lsexit\n";
}

##</code><code>##

....
asmodeus: Net::SSH::Perl Version 1.30, protocol version 2.0.
asmodeus: No compat match: OpenSSH_4.2.
asmodeus: Connection established.
asmodeus: Sent key-exchange init (KEXINIT), wait response.
asmodeus: Algorithms, c->s: 3des-cbc hmac-sha1 none
asmodeus: Algorithms, s->c: 3des-cbc hmac-sha1 none
asmodeus: Entering Diffie-Hellman Group 1 key exchange.
asmodeus: Sent DH public key, waiting for reply.
asmodeus: Received host key, type 'ssh-dss'.
asmodeus: Host 'host2.mydomain.com' is known and matches the host key.
asmodeus: Computing shared secret key.
asmodeus: Verifying server signature.
asmodeus: Waiting for NEWKEYS message.
asmodeus: Enabling incoming encryption/MAC/compression.
asmodeus: Send NEWKEYS, enable outgoing encryption/MAC/compression.
asmodeus: Sending request for user-authentication service.
asmodeus: Service accepted: ssh-userauth.
asmodeus: Trying empty user-authentication request.
asmodeus: Authentication methods that can continue: publickey,keyboard-interactive.
asmodeus: Next method to try is publickey.
Permission denied at ./ssh_test.pl line 19