At first, I was a bit confused by this: 
while (<@ARGV>)
{
  ...
}

[download]
If the intention is to read the contents of one or more files named on the command line, this is usually expressed as just: 
while (<>)
{
  ...
}

[download]
When you do it this way, you are free to choose whether to name input files as command line args, or to pipe data to the script from some other process instead -- that is, the following two usages would be equivalent: 
your_script  file1 file2 file3

cat file1 file2 file3 | your_script

[download]
That's a dumb example, but the point is that if you happen to use some other process to generate those files, you could do: 
other_process | your_script

[download]
It's just a nice kind of flexibility to have.

In reply to Re: First Unix Admin Script - Request for Constructive Critisism by graff
in thread First Unix Admin Script - Request for Constructive Critisism by D.Millin

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.