Update 2 : It has come to my attention that the code down here is very wrong. Ignore it!
Update : This should do the trick.
It opens "C:/test.txt" , reads the lines into an array, loops through the array, printing every 100th slice, if that array slice is initialized. 
my @lines = ();

open THISFILE, "c:/test.txt";
while(<THISFILE>)
 {push(@lines,$_);}
close THISFILE;

for(my $i = 0; $i <= 1000; $i += 100)
 {print $lines[$i] || "";}

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1

In reply to Re: reading 100 line at a one time by jkva
in thread reading 100 line at a one time by contact_chatan

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