What an excellent code. Thank you sir! I timed and it took less than 7 secs ONLY to complete the process ! unbelievable... if its not too much to ask i have few more questions: 1. is the while(<$smallfile>) same reading the file while not end of file? 2. kindly explain or put comment on this expression: $search_expression .="\Q$_\E|"; 3. also this one: $search_expression = qr($search_expression); 4. next unless m/$search_expression/; Respectfully Yours, Sabas

In reply to Re^2: searching in large file by sabas
in thread searching in large file by sabas

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