perlquestion naturalsciences <p>Hi,</p> <p>I am working on multi GB text files. For now Perl has been good for working them line by line. Using the</p> <code>while($line=<>){do_stuff_with_it_and_print_to_new_file}</code> <p>Now I am in a need to read in files four lines at a time (as I need to do some comparisions in those quartets, but you can imagine that reading files in n lines at time would be helpful in several applications, etc. flat file with name\naddress\nbilling\nname\naddress\nbilling etc. for triplets.)</p> <p>I was able to fulfill my desires for duplets easily with</p><code> while($line=<>){$nextline=<>;do_stuff_to_those_poor_two_lines}</code>, but an application of <code>while($line=<>){$nextline=<>;$thirdline=<>}</code> wont work anymore. <p>So how could I get on to reading and manipulationg my text files by any number of lines at a time I wish?</p> edit: I myself am thinking of somekind of while loop based thingy with possibly seek to keep those loops moving on in the filehandle. etc.