$ modlist -?
usage: modlist [ -a AUT ] [ -r ] [ -i ] [ -nc ] [ <pattern> ]
        -a | --author=AUTHOR_ID  Only modules from author
        -r | --registered        Only registered modules
        -i | --installed         Only installed modules
        -n | --new               Only new modules
        -c | --csv               Output module and version as CSV
        <pattern>                Only modules that match pattern
$ modlist -i xpm
Module name               Description                                  Version
Bundle::Image::Info::XPM                                                   0.01
Image::Info::XPM                                                           1.07
Image::Xpm                                                                 1.12
Tk::XPMs                                                                   1.11
$ modlist -r peek
Module name               Description                                  Version
Apache::Peek              Devel::Peek for mod_perl
Data::Peek                A collection of low-level debug facilities       0.31
Devel::Peek               Peek at internal representation of Perl data     1.04
                          Core since    5.006 1.00_01      in 5.010001     1.04
POE::API::Peek            Peek into the internals of a running POE env
$