Every Monday, we'll show you how to do something new and simple with Apple's built-in command line application. You don't need any fancy software, or a knowledge of coding to do any of these. All you need is a keyboard to type 'em out!

It’s rare to go through a high school or college-level math course and not use a graphing calculator. While those calculators are cool, they are costly and often clunky to use and carry around. With gnuplot, a powerful, freely available program used for graphing, you can graph items right from the command line without the need for any additional apps or a graphing calculator. It’ll produce easy-to-read graphs that are visible right from your Terminal. We’ll show you how to install the gnuplot program, and how you can put it to good use.

Every Monday, we'll show you how to do something new and simple with Apple's built-in command line application. You don't need any fancy software, or a knowledge of coding to do any of these. All you need is a keyboard to type 'em out!

Sometimes you need to quickly replace a line of text across your documents. While you could open the documents and hand-edit them one-by-one, the easier solution is to use a Terminal command called “sed” that allows you to specify a string of text that should be substituted by another. With this command, you can easily find and replace occurrences of words in a document, automatically. Continue reading, and we’ll show you how to put this powerful command to good use.