I know there are several working examples above, but they all seem to be longer, more obfuscated, or don't include the creation code for the array. Props to the guy with the table code, though :) Here's mine. 
use strict;
use warnings;

my ($c, @data);

while (<DATA>) {
    chomp; $data[$c++] = [split /\|/];
}
print join('|', @$_) . "\n" for (sort {@$a[0] <=> @$b[0]} @data);

__DATA__
30|microsoft
70|aol
76|netscape
35|mozilla
40|opera

[download]

In reply to Re: How can I sort this data on the first field by TedPride
in thread How can I sort this data on the first field 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.