Now this code:

#!/usr/bin/perl

use threads;
use strict;
use warnings;
use Net::SSH::Expect;
require 'total.pl';

my @servers = ('192.168.0.18','192.168.0.19','192.168.0.20');
my @process = ('testing','b','c');
my @threads;
my $output;
my $res;
my $final;
#@output = threads->new(\&Process_Output, $ssh, $proc )->join();

foreach my $host ( @servers )
{
    threads->new(\&process, $host )->join();
}
sub process()
{
    my $host = shift;
    my $png = `ping -c1 $host`;
    if ( $png =~ /64 bytes/ )
    {
        my $user= 'netcool';
                my $ssh = &SSH_Reference($host,$user);
        $ssh->run_ssh();
                eval {$res=$ssh->read_all(); };
        if ( !$@ && $res !~ /\(yes\/no\)/ && $res !~ m/password/ )
        {
            print "\nLogged in to $host\n";
                foreach my $proc ( @process ) 
                {
                    #push (@threads, threads->new(\&Process_Output, $s
+sh, $proc ));
                    $output=&Process_Output($ssh, $proc );
                        #print @output;
                        if ( $output =~ m/$proc/ )
                                        {
                                                print "\t$proc is runn
+ing\n";
                                        }
                                        else
                                        {
                                                print "\t$proc is not 
+running\n";
                                        }
                }
            $ssh->close();
        }
        else
        {
            print "Unable to SSH to $host\n";
        }
    }
    else
    {
        print "\nUnable to ping to Host: $host\n";
    }
}
[download]

produces this output:

perl some.pl 
Unable to SSH to 192.168.0.18
Unable to SSH to 192.168.0.19
Unable to SSH to 192.168.0.20
[download]

Now again back to the stage where I have started my script....