I think your best bet is to obtain the MIB definition for this SNMP data, then use SNMP::MIB::Compiler to convert the numbers to symbolic names as you get them. You can then use each symbolic name as the hash key, and simply push all the results with the same key, giving you a hash of arrays.

Of course, if you want to output it like who, an array of hashes would be more convenient. The code for that would be something like 

use SNMP::MIB::Compiler;

my $mib = new SNMP::MIB::Compiler;

while (my ($oid,$type,$val)=read_snmp) {
  $oid=s/\.(\d+)$//;
  $index=$1;
  $arr[$index]{$mib->convert_oid($oid)}=$val;
}

[download]
Giving you an array of hashes quite suitable for simple printing a-la who.

In reply to Re: Parsing SNMP output by matija
in thread Parsing SNMP output by Anonymous Monk

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.