111. 🔍 What is $PATH in Bash? How Commands Are Found and Run (with Node.js Examples)

Have you ever wondered how your terminal knows where to find a command when you type something like ls or node?

In this video, we dive deep into the mysterious $PATH variable in Bash and Unix-like systems. You'll learn:

What the $PATH variable actually is
How Bash uses $PATH to find and execute commands
The difference between built-in commands, aliases, functions, and executables
Why some commands like echo exist both as built-ins and executables
How to modify your $PATH (temporarily and permanently)

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