To count the number of lines in your file:

my $lines = 0;
open USERDAT, 'users.dat' or die "can't open users.dat: $!\n";
$lines++ while (<USERDAT>);
close USERDAT;
# now lines has the number of lines.

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In reply to Re: Count number of lines? by bikeNomad
in thread Count number of lines? by ginocapelli

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