The vi editor is by far one of the most used editors in the Unix community today. The vi editor has been around for a long time and continues to find new fans at an increasing rate. It's a streamlined, highly functional tool that does not require much memory. It can be said that the vi editor is Unix's most universal editor. Pronounced vee-eye, vi isn't a user-friendly editor. In fact, one of the hardest things to learn and master in Unix is file editing with the vi editor. The power of the vi editor comes from its low overhead and high functionality.
To use the vi editor, you only need to open it up using the vi command. To see the vi editor in action, do the following:
Select a file you want to edit with the vi editor.