The day I stopped Googling "how to rename 50 files at once" and just learned the CLI

It started with a stupid problem. I had a folder with 60 screenshots named something like Screenshot 2024-03-14 at 10.32.11 AM.png , and I needed them all renamed to a clean img-001.png format before shipping assets to a client. My first instinct? Google it. Find a Stack Overflow answer. Copy a bash one-liner. Paste it. Pray. It worked — but I had zero idea what it did. That moment made me realize something uncomfortable: I'd been treating the terminal like a vending machine. Put in a query, get out a command, move on. I understood nothing about what was actually happening. So I spent a weekend actually learning a handful of CLI tools — not to become a Unix wizard, just to stop feeling helpless every time I opened a terminal. It changed how I work in ways I didn't expect. Here's the thing about CLI tools: they compose. Once you understand tools like find , xargs , grep , and awk at even a basic level, you can chain them together to solve problems that would otherwise require writing a