Perl is a well-liked programming language and among its major advantages is the fact that it works with the so-called modules - short pieces of program code that include subroutines and execute a variety of tasks. The useful side of using modules is the fact that you won't have to create custom-made code or add the entire code for a specific action every single time it should be executed. Instead, you can add only one line in your Perl script that calls a certain module, that in turn will execute the necessary task. Not only will this lead to shorter and enhanced scripts, but it'll also allow you to make modifications a lot quicker and much easier. In case you aren't a programmer, still you would like to work with a Perl app which you've found on the web, for example, it's very likely that the application will need certain modules to be already set up on your website hosting server.