Vi

: Move cursor left, down, up, right (alternative to arrow keys). w : Move forward one word. b : Move backward one word. 0 (zero) : Move to the beginning of the line. $ : Move to the end of the line. 3. Editing (Command Mode) x : Delete the character under the cursor. dd : Delete (cut) the entire current line. yy : Yank (copy) the current line. p : Paste the copied or deleted text after the cursor. u : Undo the last action. Advantages

To start using vi , you only need to learn a few key commands: vi filename : Open or create a new file. i : Switch to Insert mode to start typing text. : Exit Insert mode and return to Command mode . :w : Save (write) the file. :q : Quit the editor. :wq or ZZ : Save and quit. :q! : Quit without saving changes. 2. Navigation (Command Mode) : Move cursor left, down, up, right (alternative

vi is a powerful, modal text editor that is standard on nearly all Unix and Unix-like operating systems (including Linux and macOS). It is known for its speed and efficiency, allowing users to edit text without removing their hands from the home row of the keyboard. Key Concepts & Modal Editing 0 (zero) : Move to the beginning of the line

It is guaranteed to be available on any Unix system, making it essential for system administration. Editing (Command Mode) x : Delete the character

Unlike modern word processors (like Notepad), vi is , meaning the keyboard behaves differently depending on the mode you are in.

Based on your request, this write-up focuses on , the foundational screen-oriented text editor originally developed for Unix systems. What is vi?