A good deal of the power and flexibility behind Perl lies in its "built-in" variables. Perl’s built-in variables provide many functions:
Allows you to modify the behavior of your Perl script
Holds important information regarding how your Perl script is running
Holds data regarding the results of pattern matching
This chapter provides some insight as to how you can use built-in variables. Note that not all variables will be covered in this chapter as some variables are more useful than others and others are a bit more esoteric. Additionally, ...
