for my $i (0 .. $#unique_manufacturer_model) {
	for my $j (0 .. $#unique_terminal_id) {
		if ( (@unique_manufacturer_model->[$i][9] eq @unique_terminal_id->[$j][9]) and (@unique_manufacturer_model->[$i][10] eq @unique_terminal_id->[$j][10]) ) {
			if (@unique_manufacturer_model->[$i][12] eq "") {
				@unique_manufacturer_model->[$i][12] = 1;
			}
			else {
				@unique_manufacturer_model->[$i][12]++;
			}
		}
	}
}
&checkpoint(9,10,12,@unique_manufacturer_model);

&checkpoint(10,11,12,@unique_manufacturer_model_version);


And here's the output:

[root@localhost cron]# perl probe_cron.pl 

1) Nokia | N77 | 5
2) Nokia | Nokia N96 | 36
3)  |  | 1


1) N77 | [V 3.0747.2.0.3|22-11-2007|RM-194] | 5
2) Nokia N96 | [10.045|31-07-08|RM-247|(C) Nokia N96] | 36
3) Nokia N96 | [v 0.0804.X.0.032|06-02-08|RM-247|(C) Nokia N96] | 
4)  | [] | 1
5) N77 | [V 3.0827.22.0.1-RD|04-07-2008|RM-194] |