Pro Perl Programming: From Professional to Advanced

© William "Bo" Rothwell of One Course Source, Inc. 2020

W. ". RothwellPro Perl Programminghttps://doi.org/10.1007/978-1-4842-5605-3_5

5. Exploring Useful Built-in Variables

William “Bo” Rothwell¹ 

(1)

San Diego, CA, USA

 

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, ...