The vi editor is a text editor available on Unix systems. It uses keystroke commands instead of menus to edit text by adding, changing, and deleting content. Vi allows editing text from any terminal by typing "vi" followed by a filename, which opens the file for editing in one of two modes - command mode for editing commands or insert mode for inserting text.

2. The vi editor (short for visual editor) is a screen editor which is available on almost all Unix systems. vi is a text editor, not a “WYSIWYG" word processor vi has no menus but instead uses combinations of keystrokes in order to accomplish commands.

3. Lets you add, change, and delete text but does not provide such formatting capabilities as centering lines or indenting paragraphs. Can be used from any type of terminal

4. At the Unix prompt type vi followed by a file name. vi filename Then hit Return . You will see a screen similar to the one below which shows blank lines with tildes and the name and status of the file. ~ ~ "myfile" [New file]

7. Command mode Insert mode

8. In command mode, the letters of the keyboard perform editing functions. Press escape <Esc> key to enter in command mode. In insert mode, the letters you type form words and sentences. Press the alphabet i to enter in insert mode.

10. KEY h  j  k  l  CURSOR MOVEMENT left one space down one line up one line right one space

11. x  delete character dw  delete word dd  delete line cw  replace a word J  join succeeding line to current cursor line u  undo last change

12. w  Forward word by word b  Backward word by word $  To end of line 0  To beginning of line H  to top line of screen M  to middle line of screen L  to last line of screen G  to last line of file

13. 1G  to first line of file <Control>f  scroll forward one screen <Control>b  scroll backward one screen <Control>d  scroll down one-half screen <Control>u  scroll up one-half screen

14. :q or ZZ  save file and then quit :w  save file :q!  discard changes and quit file :q  quit

15. SOME EXAMPLES

25. THANK YOU