Vim three modes and commands for Linux

General Mode : Enter the "vim file name" in the Linux terminal to enter the general mode , but cannot enter the text.
edit Mode : Press I in general mode will enter the editing mode , you can write the program, press ESC to return to the general mode .

command mode : Press in normal mode : Will enter command mode , there will be a colon in the lower left corner, at this point, you can type the command and execute.

Command mode :

I	Enter in front of the cursor	I	Enter at the beginning of the line
A	Enter after the cursor	A	Enter at the end of a row
O	Enter at the beginning of the next line in the row where the cursor is	O	Enters the line at the beginning of the row where the cursor is located
cw	Modify a Word	Dw	Delete a word
Dd	Delete a row	U	Undo Last Action
Ctrl+r	Restart last action	Gg	Cursor quickly back to the bottom of the file
Gg	Quick cursor back to file header	4dd	Delete 4 lines at the beginning of the line where the cursor is located
P	Paste at the next line of the cursor	Yy	Copy a row
d$	Delete the character after the cursor is the end of the line

Last-line mode :

Q	Exit	Q!	Force exit
W	Save	Wq	Save and exit
wq!	Force Save and exit	Set Nonu	Do not display the number of rows
Set Autoindent	Auto Align	Set Noautoindent	To cancel automatic alignment
1,5s/mail/gmail/g	Global substitution (1-5 rows)	1, $s/mail/gmail/g	Global substitution

Vim three modes and commands for Linux