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in reply to Finding Module Versions - How Would You Do It?

I suspect that your CPAN Modules were installed by doing something like ...
$ perl -MCPAN -e install DBI
... but just in case this is not the case and your CPAN Perl modules were installed via yum/rpm (or Debian deb files) you could easily discover the version of the Perl module with a command line like this, rpm -q perl-DBI, in the case of Redhat.