Is there a way to use check rm to see if the entries match an existing entry in a database?
Your question is highly misleading. Steaming slightly in the summer heat, my thoughts condensed immediately into a big question sign, as rm is the UNIX binary to remove files, which doesn't check for database records by default. Further reading suggested that you might have meant check_rm instead (s/ /_/), a method which doesn't appear neither as source in the code you posted, nor in the package your provided link leads to.

As for the answer - I guess, yes, it can be done, maybe a check before SuperClan::Database::User_Auth->create() would be handy, in the register_process method of SuperClan::Application::User_Auth.

But how can I know? Aren't the packages by "Super Clan © 2006 B Carlyon Web Development 2006", i.e. by yourself? Then you are the one who possibly knows best how and where to hook in a comparation of fields.

Follows is my current checck rm routine: 
my ($results, $err_page) = $self->check_rm('register',
...

[download]

This is rather an invocation of check_rm as a method of $self.

Fellow monk, please rethink your question (see I know what I mean. Why don't you?), and strip it down to the core of your problem with the help of How do I post a question effectively?, for I can't do a code review even if I had the time to spare - in http://superclan.lsrfm.com/src/ there are only SuperClan.pm and User_Auth.pm.

best regards,
--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re: A validate rm, question by shmem
in thread A validate rm, question by barrycarlyon

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.