In this chapter, we’ll install tools we can use to manage our installed Ruby versions. We will issue commands to our local operating system via the command-line interface
1 (CLI) using a shell interpreter, which depending on your operating system is likely to be
bash or
zsh. On macOS, we can use the
Terminal application to issue these commands, and similar programs are available on other operating systems:
Installing Homebrew
On macOS, I use Homebrew2 to install most of my local software development stack. There’s a shell command on the Homebrew ...