The bare minimum vi.
How to open a new or existing file in vi
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
Quit without saving changes
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)