Use a hash, something like the following code 

my %erg = ();
while(<DATA>) {
    my @row = split(/,/,$_);
    ++$erg{$row[3]};
}
print $_ . ': ' . $erg{$_} . '<br />' . "\n" foreach (keys %erg); 
__DATA__
Auto,00883,pw00,DX,4/15/2004,10:12:59,1110046,1
Auto,00883,pw00,FA,4/15/2004,10:15:45,,
Magic,006513,pw13,Login,4/15/2004,10:16:23,,
Car Wash,006513,pw3h,Not Found,4/15/2004,10:16:57,1232246,
Home and Auto,006513,pw6513,DI,4/15/2004,10:17:09,15134346,1
Auto,00883,pw00,FA,4/15/2004,10:17:17,,
Home,006513,pw6513,Login,4/15/2004,10:17:38,,
Home,006513,pw6513,DI,4/15/2004,10:17:44,151234326,1
Deal Time,006513,pw001,Login,4/15/2004,10:53:31,1,
Car Wash,006513,pw3h,DI,4/15/2004,10:53:46,11238748,1
Magic,006513,pw13,Login,4/15/2004,11:01:25,0,

[download]
Edit: fixed missing right-curly.
Edit II: fixed spelling error, removed untested-remark.

regards,
tomte

An intellectual is someone whose mind watches itself.
-- Albert Camus

In reply to Re: Unique items in a text file by Tomte
in thread Unique items in a text file by Anonymous Monk

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