Dear Gurus, in my scripts just after execution user needs to input several information`s as a prompt answer. One of the information which needs to be checked is user name. On our server we are using special name convention which looks like this: usr123 - 3 letters and 3 diggits I would like to implement some rule which will check if user input fit to current name convention (3 letters and 3 diggits). I started writing some script but I stuck here. Maybe somebody will be able to help me. 
#!/usr/bin/perl

use warnings;
use strict;

print "OS username:";
my $os_user = <>;
chomp $os_user;   #remove "\n" on the end of entered string

... ?

[download]
Thanks in advance for any ideas. Zalezny

In reply to Checking name convention by zalezny

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.