The only thing missing from this 3 part tutorial series is a link from Part 1 to Parts 2 and 3:

1. How to write apps for macOS/OSX in Perl! Part 1: Perl ASN Check
2. How to write apps for macOS/OSX in Perl! Part 2: Perl Version Tool
3. How to write apps for macOS/OSX in Perl! Part 3: Random DNS Server

I hope you enjoy learning how to use the tools built-in to every Apple Mac like Perl, AppleScript and Automator to create portable binary applications!