It's good to see you using use strict;. However you only need it once in your script (although may be this is a couple of scripts combined to show the issue, in which case good work and ignore the comment).

I recommend that you return as soon as you find and deal with an error so you don't clutter the following code with redundant tests:

   if ($paramno == 0) {
      print "\n\tNo parameters supplied - can't set up environment!\n"
+ ;
      return 0;
   }

[download]

However the real problem seems to be that you are creating an array containing a single element which is a reference to a hash in your lookup hash, where I suspect you really just want a reference thus:

   my %DBhashlookup = (
   "TEST"      =>  \%TEST,
   "LIVE"      =>  \%LIVE,
   "DEVLP"     =>  \%DEVLP,
   ) ;

[download]

Making that change and running the code prints:


    xxrctest S T A R T S

    KEY    ::  ADMIN_DIR

    VALUE  ::  /opt/bin2

    xxrctest E N D S

[download]
DWIM is Perl's answer to Gödel

In reply to Re: Hash Table References? by GrandFather
in thread Hash Table References? by Ronnie

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.