Short tip: List all installed Perl modules

If you want to list all installed Perl modules - e.g. to make sure all requirements of a Perl application are provided - pmall might help you a lot. On Red Hat Enteprise Linux/CentOS systems the tool is part of the perl-pmtools package and creates an output like below:

1# yum install -y perl-pmtools
2# pmall
3Newt (1.08) - Perl bindings for Red Hat newt library
4Mysql (1.2401) - Perl interfaces to the mSQL and mysql databases
5DBI (1.52) - Database independent interface for Perl
6APR (0.009000) - Perl Interface for Apache Portable Runtime
7Clone (0.27) - recursively copy Perl datatypes
8GD (2.35) - Interface to Gd Graphics Library
9...

All modules (their versions are mentioned in brackets) and their appropriate short descriptions are listed.