Can you derive a clue from the following? 
$lim=3;
while(<DATA>)
{
    if(0 == ($ctr % $lim) )
        {
            print "\n\nNext group of $lim is...\n";
        }
        print ;
           $ctr++;
}
__DATA__
one
two
three
four
five
six
seven
eight
nine
ten

[download]
This is just to "send" the clue. No boundary conditions tested :)

In reply to Re: Group every 50 rows by cheekuperl
in thread Group every 50 rows by perlnoobster

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