I like eyepopslikeamosquito's way the best. Normally, I would build an index, but that can get tedious. You can build an index on the fly mentally by looking at $lines[$#lines]. That's the last line, but, now shifting into reverse, the next to last line would be $lines[$#lines-1] and so on until you get to the first line. For example, in this script there are 17 lines of the file being examined, so the first line would be $lines[$#lines-16], and the last line would be $lines[$#lines]. The script prints out the number of lines, the first line, and the last line. Adjust for the first line accordingly: 
#!/usr/bin/perl

use strict;
use warnings;
use Fcntl;
use Tie::File;
use File::CountLines qw(count_lines);

my $file = shift or die "usage: $0 file\n";
tie my @lines, 'Tie::File', $file, mode => O_RDONLY
  or die "error: $!";

my $number_of_lines = count_lines($file);
print "Number of lines: $number_of_lines", "\n";
print $lines[$#lines-16], "\n";
print $lines[$#lines], "\n";

[download]

In reply to Re: Find last line in Text file parsing by Khen1950fx
in thread Find last line in Text file parsing by selva

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.