Perl is a well-liked web-oriented computer programming language, that is designed to generate CGI scripts and many different apps. It is very handy owing to the fact that you don't need to write the same program code again and again to get some process executed more than once, but you can employ modules. They're pre-defined subroutines or sets of activities that can be called and executed within a script. That is to say, you can add just a reference to a particular module inside your code instead of using the entire module code over and over again. In this way, your script will be shorter, therefore it shall be executed a lot quicker, not mentioning that it'll be a lot easier to maintain and / or modify. When you want to take advantage of a third-party ready-made Perl script as an alternative to writing your own, it will probably need specific modules to be present on the hosting server.