Knowing how to check the Perl modules that are installed on your system is a valuable skill for any Perl developer. Perl modules are reusable code libraries that can extend the functionality of your Perl scripts. By checking which modules are installed, you can ensure that you have the necessary modules to run your scripts and avoid potential errors.
There are a few different ways to check which Perl modules are installed on your system. One way is to use the `cpan -l` command. This command will list all of the Perl modules that are currently installed on your system, along with their versions.