referring to Homebrew site. Step1. Installing brew /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" Step2. Executing brew doctor to check brew status $ brew doctor Your system is ready to brew. Step3. Check brew version $ brew -v Homebrew 1.3.4 Homebrew/homebrew-core (git revision 2105c; last commit 2017-10-01)