The basic idea is to have the number of the first line that you want to display and use $. to work out where you are in the file.

my $page = 1; # which page to display
my $display_perl_page = 100;
my $first = ($page - 1) * $display_perl_page;
my $last = $first + $display_perl_page;

while (<VIEWFILE>) {
  next unless $. >= $first;
  last if $. > $last;

  # display this record
}

[download]

(That code is untested, there may be an off-by-one error)

There are modules like Data::Page that make this all a lot easier.

Another alternative might be Tie::File.

--
<http://dave.org.uk>

"The first rule of Perl club is you do not talk about Perl club."
-- Chip Salzenberg

In reply to Re: Reading Text Lines by davorg
in thread Reading Text Lines by Anonymous Monk

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