4.3 Text file commands

• cat: this command ``types'' the content of a file to the console (screen), by default.
• less: this command displays the content of a file using a scroller (so you can use up, down, and other cursor control keys to navigate).
• pico or nano: these two are basic text editors that are fine for simple text editing.
• vi or vim: these two are advanced text editors that support many cool features. Be warned, however, that it takes quite a bit of time to master vi.