Where you have our $device=$current_list[$n][0] the device name is now in $device, so that is what you want to count. Right after that add the line $count{$device}++;. Then do the same for where you have our $tempdevicelinks=$temp_list[$n][0] - add the line $count{$tempdevicelinks}++;. You could just copy and paste my sections of code into the relevant parts of your own code, and delete from your own code this bit: 
foreach my $device (@current_list, @temp_devicelist) {
    $count{$device}++;
}

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In reply to Re^3: compare 2 arrays for intersect diff and commmon values by tangent
in thread compare 2 arrays for intersect diff and commmon values by rasgolla

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