If by alias you mean a second reference to the same variable, you can use standard perl references.

You will probably want to read perlref to get an idea of how that works. There are lots of "special" variables (perlvar), and I cant think of many uses for this, but this certainly works: 

#!/usr/bin/perl

use strict;
use warnings;

$_ = "Hello";
print '$_: ' . $_ . "\n";
my $test = \$_;
print '$test: ' . $test . "\n";
print '$$test: ' . $$test . "\n";

print '$|: ' . $| . "\n";
$test = \$|;
print '$test: ' . $test . "\n";
print '$$test: ' . $$test . "\n";

$|++;

print '$|: ' . $| . "\n";
print '$test: ' . $test . "\n";
print '$$test: ' . $$test . "\n";

[download]

This isn't a particularly pretty piece of code, but I've separated it all out so that you can see whats going on.

In reply to Re: alias of a variable by barns
in thread alias of a variable by vinoth.ree

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.