ad 1) If you want to get the last element of an array you can use the index -1 or $#array_name: print $lines[-1]; or print $lines[$#lines];

ad 2) if you are only interested in the last line you don't need to store the whole file in an array. Just loop through the file and remember the line you've just read, until you arrive at the end and print the last line you've seen.

Of course if you know the file is huge you may need/want to do something more complex, using seek(), reading last N bytes of the file, checking there is a newline character in that and possibly read a bigger chunk ... but the question is whether it's worth the effort.

Jenda
Support Denmark!
Defend the free world!

In reply to Re: Grab last line and print by Jenda
in thread Grab last line and print by Anonymous Monk

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.