vi

This tutorial will show you how to use vi, a powerful visual editor. Using a special accelerated cheat sheet method, this tutorial is designed to make you a proficient vi user without requiring a huge time commitment. In this vi tutorial, you'll learn how to move around, edit text, use insert mode, copy and paste text, and use important vim extensions like visual mode and multi-window editing.

If you either don't know or aren't comfortable using vi, then you owe it to yourself to take this tutorial and get up to speed with one of the most popular and powerful Linux/UNIX visual editing programs.