1. Linux 104 Training Module
File Editing

2. This presentation will cover the following topics in vi
Command mode and Insert mode
Basic commands for file editing
Cut copy paste
Searching string

3. enables to insert text in file.
vi abc.txt
Command Mode :
saving files, executing commands, moving cursor, pasting lines or words, and finding and replacing.
Insert Mode :
enables to insert text in file.
vi starts in command mode and to come into insert mode type i.
:w to save file anytime
:wq -- most used to save data and quit
:q! quit without saving
:wq! -- to save change in file opened in read-only mode.
yy equivalent to cut also called yank  

4. :<line no> -- goto line no.
x delete the char
a add text after the cursor.
i insert text at the cursor

5. Highlight a region by pressing "v" and moving the cursor.
Cut/Copy/Paste
Highlight a region by pressing "v" and moving the cursor.
Use either x to cut or y to copy
Use P to insert the text "before" the cursor, and p to put the text at the point after the cursor
Searching for strings
To search for a string in forward direction, while in command mode , hit /
Followed by the search expression.
To search a string in reverse direction, hit ?