How to Use ChatGPT Codex on Mac for the First Time #shorts #aicoding #aidevelopment #iosdev

Sep 22, 2026

Never used Codex before? This beginner tutorial shows how to start using OpenAI Codex on a Mac, step by step, after it is installed.

What you'll do:

  • Create a practice folder called codex-practice on your Desktop
  • Copy the folder's path in Finder with Option + Command + C
  • Open Terminal (the Mac app where you type commands) and go to the folder
  • Start Codex and sign in
  • Type your first prompt and see Codex create a file

Commands from the video (replace the path with the one you copied; your folder path will be different):

cd /Users/yourname/Desktop/codex-practice
codex

First prompt:
Create a text file named hello.txt with the words "My first Codex file." Tell me where you saved it.

You need a paid ChatGPT plan that includes Codex, and what your plan includes can vary, so check the official documentation before you start:
https://learn.chatgpt.com/docs/codex/cli

Sign-in screens and commands can change. If something looks different, follow the official documentation. The sign-in step in the video is an illustration, not a recording of a real account.

Haven't installed Codex yet? Watch the install video first.
Next video: using Codex to build something useful.