ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/Go/install)"
brew search XXX
brew info XXX
brew update
brew outdated
列出全部安装的软件里能够升级的软件git
brew upgrade
升级全部能够升级的软件们github
brew upgrade XXX
升级某个软件缓存
brew cleanup
清理不须要的版本极其安装包缓存ruby