Drupal is usually found within a LAMP (Linux, Apache, MySQL, and PHP) stack. This chapter is dedicated to helping you understand Linux, and it has lots of tips and tricks so you can get comfortable with navigating around your Linux box. My personal machine is a Mac running OSX, which is a Linux flavor. I also like Ubuntu for my production computers, which house the development, stage, and production environments for my projects. Ubuntu is another popular Linux flavor. This chapter will focus on these two flavors of Linux—OSX and Ubuntu—but once you learn one flavor of Linux, it’s not difficult to pick up other Linux variants. Most of the commands are identical.