I have two files - one which looks like this (FILE1) 
1.10.10
1.10.1040
1.10.150
1.10.220

[download]
...etc

and another that looks like this (FILE2) 

1.10.10.640
1.10.10.650
1.10.10.660
1.10.1040.20
1.10.150.290
1.10.150.300
1.10.150.310
1.10.220.80

[download]
...etc

I'm wanting to match the first three numbers from the 4 number strings in FILE2 (each number being separated by a '.') with the corresponding three number strings in FILE1 and then count how many matches there are.

For example for the three number string 1.10.10 in FILE1 there are 3 matches in FILE2.

I want the output file to look like this: 

1.10.10 3
1.10.1040 1
1.10.150 3
1.10.220 1

[download]
I've got the following script 
use strict;

my $file1 = shift;

my $file2 = shift;

open(FILE1, $file1) or die "Cant open $file1:$!\n";

open(FILE2, $file2) or die "Cant open $file2:$!\n";

my @file1 =<FILE1>;

my @file2 =<FILE2>;

#print @file1;
#print @file2;

for(my $i=0; $i<@file1; $i++)
{
    chop($file1[$i]);
    #print "F $file1[$i]";

    for(my $j=0; $j<@file2; $j++)
    {
    chop($file2[$j]);

    my @array = split(/\./, $file2[$j]);

    my $cat = "$array[0]" . "." . "$array[1]" . "." . "$array[2]";

    if("$file1[$i]" eq "$cat")
    {
        print "$file1[$i] $cat\n";
    }
    
    }
}

[download]
But its simply not working properly - its not finding all the matches. I've given only example files here - the actual files are much bigger - some matches are recognised but not all. Any pointers in the right direction much appreciated!!!

In reply to help requested with collating data from two files by Angharad

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