Install Brew on a M1 Mac

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
eval "$(/opt/homebrew/bin/brew shellenv)"
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
echo 'eval "$(/opt/homebrew/bin/brew shellenv)"' >> ~/.zprofile
eval "$(/opt/homebrew/bin/brew shellenv)"

Usage #

1. Run uname -m in the Terminal of your choice and verify it outputs arm64¹
2. Run the command above²
3. If you have not installed the Xcode Command Line Tools, brew will automatically install them for you
4. After the installation completes, run brew doctor
5. If the output of brew doctor is Your system is ready to brew., you are done
6. If brew doctor returns issues, resolve them according to the provided instructions
7. You may want to set up Homebrew’s shell-completion³ at this time