One of the major application of Perl language is to processing of text files and analysis of the strings. Perl also used for CGI( Common Gateway Interface) scripts. Used in web development, GUI(Graphical User Interface) development. Perl's text-handling capabilities is also used for generating SQL queries.

Why do we use Perl?

Perl is a general-purpose programming language originally developed for text manipulation and now used for a wide range of tasks including system administration, web development, network programming, GUI development, and more.

Why do hackers use Perl?

Why Perl Is So Important in Linux

In addition, Perl gives us the capability to use shell scripting commands in our scripts making it extremely useful for scripting hacking tasks that both require shell commands and text manipulation, such as website reconnaissance and hacking.