Complete vi editior commands

The Vi editor is a powerful and widely used text editor in Unix-like operating systems. Here is a list of some common Vi commands:

Command Modes:

1. Normal Mode:

   • i: Switch to insert mode before the cursor.
   • I: Switch to insert mode at the beginning of the current line.
   • a: Switch to insert mode after the cursor.
   • A: Switch to insert mode at the end of the current line.
   • o: Open a new line below the current line and switch to insert mode.
   • O: Open a new line above the current line and switch to insert mode.
   • x: Delete the character under the cursor.
   • dd: Delete the entire line.
   • yy: Yank (copy) the entire line.
   • p: Paste the yanked text after the cursor.
   • P: Paste the yanked text before the cursor.
   • u: Undo the last change.
   • Ctrl + r: Redo the last undone change.
   • :w: Save changes (write).
   • :q: Quit.
   • :q!: Quit without saving changes.
   • :wq or ZZ: Save changes and quit.

2. Insert Mode:

   • Press Esc to switch back to normal mode.

Navigation:

1. Basic Movement:

   • h: Move left.
   • j: Move down.
   • k: Move up.
   • l: Move right.

2. Word Movement:

   • w: Move to the beginning of the next word.
   • b: Move to the beginning of the previous word.
   • e: Move to the end of the current word.

3. Line Movement:

   • 0: Move to the beginning of the line.
   • $: Move to the end of the line.
   • ^: Move to the first non-blank character of the line.
   • G: Move to the end of the file.
   • gg: Move to the beginning of the file.
   • :n: Move to the n-th line.

4. Search:

   • /pattern: Search forward for a pattern.
   • ?pattern: Search backward for a pattern.
   • n: Move to the next occurrence of the search pattern.
   • N: Move to the previous occurrence of the search pattern.

5. Other Movement:

   • %: Move to the matching parenthesis or bracket.

Visual Mode:

1. Enter Visual Mode:

   • v: Start visual mode character-wise.
   • V: Start visual mode line-wise.
   • Ctrl + v: Start visual mode block-wise.

2. Text Selection:

   • Use movement commands to select text.
   • y: Yank (copy) the selected text.
   • d: Delete the selected text.

These are just some of the basic Vi commands. Vi has a rich set of features and commands, so feel free to explore more as you become comfortable with the basics. Additionally, Vim, an improved version of Vi, provides even more functionalities.