Perl is a widespread programming language and among its main advantages is that it works with the so-called modules - short bits of program code that contain subroutines and execute a variety of tasks. The useful side of employing modules is the fact that you will not need to create custom code or add the entire code for a specific task each and every time it needs to be executed. Instead, you'll be able to add just one line in your Perl script that calls a specific module, that in turn will execute the needed action. Not only will this provide you with shorter and enhanced scripts, but it'll also allow you to make adjustments swifter and easier. If you are not a programmer, yet you would like to start using a Perl application which you've discovered on the Internet, for instance, it is very likely that the application will need certain modules to be already installed on your website hosting server.