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The bare minimum vi.

How to open a new or existing file in vi

File navigation

Use [Page Up] , [Page Down]  to page through the file. Use the arrow keys to move the cursor.

Command mode and insert mode

When you first start vi, you are in command mode

To switch to insert mode

Once in insert mode, you can type in your text file.

To switch from insert mode to command mode

Command mode

Quit without saving changes

Quit

Write (save)

Write a copy of the file to another name

Search for a string (replace “search” with the string you are searching for)

Global search and replace (replace “search” and “replace” with the strings you are searching and replacing)