Installing Homebrew

Homebrew is a free open source software package manager for macOS. Run the following in the Terminal if you don't already have Homebrew installed:

# Step 1b: Install Homebrew package manager
$ /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

You'll need Homebrew to install the Vapor CLI tools or many useful libraries on your Mac. If you encounter any problem installing Homebrew, you may want to visit Homebrew's official website, https://brew.sh/. With the Homebrew software package manager, you're ready to finish the rest of the installation process on your Mac.