title: How can I tell who installed which CPAN module and when on Centos 6?
body: <p>I have seen some issues with CGI version being updated to v4.51 in CentOS 6.8 machine.  I can check the version of CGI using:</p>
  <pre><code>perl -MCGI -e 'print $CGI::VERSION .&quot;\n&quot;;'
  </code></pre>
  <p>But, I am more interested in knowing when was it updated and by whom, since automatic update of modules is disabled on the system.  There could be other Perl modules or CentOS libraries also that might got affected.  How can I figure out what has happened, when and by whom?</p>