Vim basic commands (reproduced from the network)

From the Unix Beginner's Tutorial (fourth edition).

Command mode switch to text input mode:

Key	Function
I	Enter text to the left of the cursor
I	Enter text at the beginning of the current line
A	Enter text to the right of the cursor
A	Enter text at the end of the line at the current line
O	Adds a blank line to the next line in the current row, with the cursor at the beginning of the new line
O	Adds a blank line to the top row of the current row, with the cursor at the beginning of the new line

Regardless of which shortcut key is used to enter this mode, in insert mode, it is inserted before the cursor.

Text modifier keys, only available in command mode

Key	Function
X	Deletes the specified character at the cursor position
Dd	Delete the line where the cursor is located
U	Undo Recent Changes
R	Replaces one character at the cursor position
R	Replaces characters starting at the cursor position, while changing vim to text input mode
.	Repeat the last modification

The cursor moves the key, and the command mode controls the cursor movement.

Key	Function
h or [←]	Move the cursor to the left one
J or [↓]	Move the cursor down one line
K or [↑]	Move the cursor up one line
I or [→]	Move the cursor to the right one
NG	Transfer to Nth row
G	Skip to Tail line
Dg	Delete all

The Exit command, in addition to the ZZ command, starts with ":" and ends the command line with [Enter].

Key	Function
Wq	Save the file, exit the editor
W	Save the file, but do not exit the editor
Q	Exit editor
Q!	Do not save the file, exit the editor
Zz	Save the file, exit the editor

Search command

Key	Function
/	Search forward to the specified string, and then press N to search for the next
?	Search backwards for the specified string, search to press N to find the next

Vim basic commands (reproduced from the network)