Linux text editor Vim/Vi

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Text editor Vim/Vi

1. Introduction to Vim/Vi

(1), Vim/Vi is a powerful full-screen text editor and the most commonly used file editor on Linux/UNIX

(2), Vim/Vi has no menu, only commands

2. Insert command

Order	effect
a	Append text after cursor
A	Append text at the end of this line
i	insert text before cursor
I	Insert text starting on this line
o	Insert a new line under the cursor
O	Insert a new line at the cursor

3. Positioning command

Order	effect
h or arrow left	move left one character
j or down arrow key	move down one line
k or up arrow key	move up one row
l or right arrow	move right one character
$	move to end of line
0	move to beginning of line
H	move to top of screen
M	move to center of screen
L	move to bottom of screen
: set no	set line number
: set nine	cancel line number
gg	to the first line
G	to the last line
Mr	to line n
: n	to line n

4. Delete command

Order	effect
x	Delete the character where the cursor is
nx	Delete n characters after the cursor position
dd	Delete the line where the cursor is located, ndd deletes n lines
dG	Delete the content from the line where the cursor is to the end
D	Delete from the cursor position to the end of the line
:n1,n2d	Delete the specified range of rows

5. Copy and cut commands

Order	effect
yy or Y	copy current line
nyy 或nY	Copy the current line for n lines
dd	cut current line
n.d	Cut n lines below the current line
p or p	Paste below or above the line where the cursor is currently located

6. Replace and cancel commands

Order	effect
r	Replace the character under the cursor
R	Replace characters from the cursor position, press Esc to end
u	cancel previous operation

7. Search and replace commands

Order	effect
/string	Search forward for the specified string, ignoring case when searching: set ic
n	Searches for the next occurrence of the specified string
:%s/old/new/g	Replace the specified string with the full text
:n1,n2s/old/new/g	Replace the specified string within a certain range

8. Save and exit commands

Order	effect
:w	Save changes
:w new_filename	Save as specified file
:wq	save changes and exit
ZZ	Shortcut key, save changes and exit
:q!	Exit without saving changes
:wq!	Save changes and exit (the file owner can ignore the read-only attribute of the file)

9. Application examples

(1) Import command execution result: r ! command

(2), define shortcut keys: map shortcut keys trigger commands

:map ^P I#<esc>
:map ^B Ox

(3), continuous line comments

:n1,n2s/^/#/g
:n1,n2s/^#//g
:n1,n2s/^/\/\//g

(4), replace

:ab sammail samlee@lampbrother.net

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