By using perl as a scripting language instead of a “traditional” shell, you can use much more C-like syntax without sacrificing functionality.

To see how associative arrays work, we’re going to look at both the Korn shell and Perl, though only the newest version of the Korn shell (referred to as “korn93”) supports associative arrays.

Example Script: Filament Counter The above script doesn’t yet modify the G-code, so let’s write one that actually does something.