Homebrew — package manager for macOS

## Install / remove
`brew install pkg` — install
`brew uninstall pkg` — remove
`brew list` — what's installed
`brew info pkg` — package info

## Update
`brew update` — refresh package index
`brew upgrade` — upgrade all installed
`brew upgrade pkg` — upgrade one
`brew outdated` — list outdated

## Casks (apps)
`brew install --cask app`
`brew uninstall --cask app`
`brew list --cask`

## Maintenance
`brew cleanup` — remove old versions
`brew doctor` — health check