Some things in the Terminal allow users to work faster for basic or repetitive tasks. Over the years the Mac GUI has changed the way we work, but still, many people use the command line for its ability to control and automate tasks, or even configure features on the Mac that are only accessible through the CLI. The purists among us often prefer to use the CLI as a means of manipulating the computer and getting it to perform tasks instead of using a mouse to get things done. At one time the CLI was the only way to accomplish anything on a computer then, the CLI gave way to the graphical user interface (GUI) as the popularity of PCs increased. Terminal, or the command line interface (CLI), is considered by many to be the Holy Grail of computer management.