Installing everything through Homebrew should automatically add all the appropriate PATH settings to your profile. There are more detailed instructions on installing on the project’s GitHub page. Which basically just tells you to open your terminal and type: /usr/bin/ruby -e '$(curl -fsSL )' You can get Homebrew by following the instructions on it’s website. Homebrew makes your life a lot easier when it comes to installing applications and languages on a Mac OS. Here is a Step by Step guide to installing Scala and Apache Spark on MacOS. By Jose Marcial Portilla How to Install Scala and Apache Spark on MacOS