download flutter macos code example

Example 1: add flutter to path mac permanently

Open Terminal
nano ~/.zshrc
Add: export PATH=[PATH_TO_FLUTTER_GIT_DIRECTORY]/flutter/bin:$PATH 
Run: source ~/.zshrc
restart terminal
Run: flutter doctor -v

Example 2: how to install flutter

Just follow this link : https://flutter.dev/docs/get-started/install
And follow each and every step