Perl use vs require: Compile-Time and Runtime Module Loading Explained
In Perl, `use` and `require` both load code, but they do it at different times and with different side effects. This guide shows when each is appropriate, how imports work, and patterns that avoid common production bugs.
Perl File Test Operators Explained for DevOps Automation
Perl’s built-in file test operators let you check existence, type, size, permissions, and ownership without external commands. This guide explains the operators, real vs effective ID checks, and production-friendly patterns for automation scripts.