Trying to identify all modules installed on your local server?… try this command:
Note: First time you run you might have to configure CPAN… for the most part defaults are good but pick a good local mirror.

perl -MCPAN -e 'print CPAN::Shell->r '

Package namespace    installed    latest  in CPAN file
Archive::Tar              1.30      1.52  K/KA/KANE/Archive-Tar-1.52.tar.gz
Attribute::Handlers    0.78_01      0.85  S/SM/SMUELLER/Attribute-Handlers-0.85.tar.gz
AutoLoader                5.60      5.68  S/SM/SMUELLER/AutoLoader-5.68.tar.gz
B                         1.02      1.19  N/NW/NWCLARK/perl-5.8.9.tar.gz
B::Debug                  1.01      1.11  R/RU/RURBAN/B-Debug-1.11.tar.gz