Based on an alternate guess that what you want might be to output the numbers of the lines you've processed into a reasonably visible block, thusly:

0  1  2  3  4  5  6  7  8  9  10  11
12  13  14  15  16  17  18  19  20  21  22  23
24  25  26  27  28  29  30  31  32  33  34  35
36  37  38  39  40  41  42  43  44  45  46  47
48  49  50  51  52  53  54  55  56  57  58  59
60  61  62  63  64  65  66  67  68  69  70  71
72  73  74  75  76  77  78  79  80  81  82  83
84  85  86  87  88  89  90  91  92  93  94  95
96  97  98  99  100  101  102  103  104  105  106  107
108  ....

you'll have to decide how wide you want to go on your particular DOS screen, and then use a second counter to hold the output to the width you want.

That's done indirectly, below: maxing $ctr2 at 12 means the lines of (3 digit) numbers will be not more than 62 chars wide, which should be visible_at_a_glance on any screen that I consider likely.

$ctr2=0;
for ($ctr = 0; $ctr < 180; ++$ctr) # 180 arbitrary
   {
    print "$ctr  ";      # val followed by two spaces
    $ctr2++;             # flag
    if ($ctr2 == 12) 
      {
      print "\n";
      $ctr2 = 0;
      }
   }
exit;
[download]

But for your next question, you'll get a more concise answer set, quicker, if you save us guessing your intent. Show some input; show what you hope/expect your output to be... and, for good measure, try to demonstrate some effort with code rather than "do something here.."

and please, though your code in this one was not hard to decipher, use <code> ... <\code> tags around code.

hth