I think other Kartex files also have headers, and that each header counts as two lines. So something like:
find(sub {
    return if !/\.ktf\z/;

    print("$File::Find::name\n");
    open(my $fh_in, '<', $File::Find::name)
        or die("Can't open file \"$File::Find::name\": $!\n");

    while (my $line = <$fh_in>) {
        next if $. <= 2;
        print $fh_out $line;
    }
}, '.');

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In reply to Re^2: Match multiple lines by repellent
in thread Match multiple lines by WeeDie

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