While macOS comes with Bash pre-installed, it is frozen at version 3.2 (from 2007) due to licensing restrictions. To use modern features like associative arrays and improved tab completion, you must download a newer version (Bash 5.x) manually.
If you don't have Homebrew installed, open your Terminal (found in /Applications/Utilities/ ) and paste the following command: Updating bash on macOS - Chainguard Academy download bash macos
The most reliable way to is through Homebrew , the standard package manager for Mac. Step 1: Install Homebrew While macOS comes with Bash pre-installed, it is