Vi editor notes, vi Editor

Vi editor notes, vi Editor

Abstract:

Vi Installation and Use

Vi from cainiao to master

0. vim-Vi IMproved, a programmers text editor

It can be divided into VI and VIM. In popular releases, VI = VIM

Is a text editor (all text without images, plain text content, without the suffix)

The binary file cannot be edited.

The directory cannot be edited.

When installing vim In the Debian system:

Apt install vim

 

1. Currently, there is only one place on the earth and vi is not installed by default.

Docker image Images container

2. view the VI version.

On the command line: "vi -- version"

In the text: ": version"

3. Procedure

1. vi filename

Vi is followed by a file name // if it exists, open the editing directly. If it does not exist, create a new file

2. Enter the insert mode.

Type the "I" key. We recommend that you press the I key.

You can also type the "s" key, but the s key is to delete the character of the current cursor and then enter the insert mode.

3. insert data

4. Press the "Esc" key, or type the combination key "^ [" (Ctrl-[) to enter the command mode.

TIPS: When you press the combination key, you must first press the front secondary key, and then press the function key

5. Enter ":", and then type "x/wq/w/q! /Q/qa! "

Command	Description	Status
X	Save and exit
Wq	Save and exit
W	Save	Written
Q!	Force exit and not save
Qa!	It is equivalent to q!
Q	Exit
Qa	Equivalent to q

Quick exit:

^ W q // Ctrl + w q

It is equivalent to q.

4. Status line

The last row of the current editing window is called a status row.

Used to display file names

Show rows and columns

Number of characters displayed

5. Three Modes

Insert mode

I	Enter insert mode

Command mode

^ [Or Esc

Enter command mode

Last Row Mode

:	Enter the last line

 

Insert mode

I	Insert data at the current location
A	Insert data behind the cursor position
A	Insert data at the end of the row
O	Insert data in the next row of the row where the cursor is located
O	Insert data in the last row of the row where the cursor is located
S	Delete the character at the cursor position and insert data after the cursor
S	Delete the row where the cursor is located and insert data at the beginning of the row
Cw	Delete the word with the current cursor and enter insert mode

6. move the cursor in the file

Up to down

H	Bytes
L	→
J	Bytes
K	Bytes

End of the first line

^	The beginning of the line. It is a non-null character and does not contain spaces.
0	The beginning of the line, with a space
$	The end of the line. It contains spaces and null characters.
G _	The end of the line. It is a non-null character and does not contain spaces.

Beginning and end

Gg	Preface
G (shift + g)	End

 

Middle bottom of screen head

H (shift + h)	Top Line
M (shift + m)	Intermediate line
L (shift + l)	Bottom Line

Screen flip

^ F	Flip down
^ B	Forget to flip the screen

 

Undo

U	Undo one operation	1 change; before #19 22 seconds ago
^ R	Undo an operation	1 change; after #19 33 seconds ago

Delete

X	Delete A character at the cursor
Dw	Deletes a word from the cursor.
D (shift + d)	Delete all characters behind the cursor
Dd	Delete current row
Ndd	Delete N rows
Dw	Delete a word

Copy and paste

Yy	Copy a row
P	Paste
V-w-y	Copy a word
V-y	Copy one character

 

7. Search for a string

Enter "/" to enter the search mode, and then enter the string to be searched.

N	Jump to the next string
N	Jump to the previous string

8. Replacement

: S/old/new	Replace the first old with new in a row
: S/old/new/g	Replace all old with new in a row
: S/old/new/gc	Replace all old with new in a row.
: % S/old/new/g	Replace all old with new in the file
: % S/old/new/gc	Replace all old with new in the file.

TIPS: In ":" mode, type "^ p/^ n" or "Quit/quit" to select the command that has been executed.

9. Simple settings

In ":" Mode

Row number	Set nu (number) Set nonu
Read-Only	Set readonly
Indent	Set paste

 

10. Classification

Level	Lifecycle	Requirements	Remarks
Level 1	Can Eat	Install Start View document Know the common operations after entering Up to down Delete Copy Paste Insert Exit
Level 2	Eat meat	You will Move the cursor Copy and paste the picker You cannot cancel the operation. Entrance and exit to the free redcard Building
Level 3	Delicious and spicy	Better Various duplicates Stronger Various hops Faster Flying everywhere
Level 4	Paid	Cheng Shen

11. Expansion

1. Automatic prompt

^ P	Call up the automatic Prompt window and operate one row up
^ N	Call up the automatic Prompt window and operate on the next line
^ M	Confirm

2. Block operations

^ V	Block operation

Add ##

^ V

-> Shift-I

-> ##

-> ^ [

3. Visual Selection

V	Go to visualization Selection
V	Select a row

4. indent

<	Left indent
>	Right indent

5. Split screen

^ W s/: sp	Split landscape Screen
^ W v/:	Split portrait Screen
^ W q	Exit
^ W hjkl	Switching between screens

 

6. Create a new file

In the command mode of vi, after the ":" command is used in the currently opened file,

Type: new file_name to create a new file_name file window in the current window.

In this case, you can switch up and down through ^ w jklm or copy and paste multiple files freely.

7. Other advanced tips

1. Save changes to files that do not have permissions (use ": w! Sudo tee % "):

Your @ your:/etc/apt $ vi 1111

After inserting data, type the command mode I (":")

Operation:

": W! Sudo tee %"

-> Press "O" or "L ".

: R! Uname-a // Insert the content displayed after the command is executed to this text

: W! Sudo tee %

// Raise the permission and save the edited document

Execution Process:

Linux your 4.4.0-87-generic # 110-Ubuntu SMP Tue Jul 18 12:55:35 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

 

W13: Warning: File "11111" has been created after editing started

[O] K, (L) oad File:

 

: W! Sudo tee %

 

Linux your 4.4.0-87-generic # 110-Ubuntu SMP Tue Jul 18 12:55:35 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

 

W13: Warning: File "11111" has been created after editing started

 

Press ENTER or type command to continue

Your @ your:/etc/apt $ cat 11111

 

Linux your 4.4.0-87-generic # 110-Ubuntu SMP Tue Jul 18 12:55:35 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

Your @ your:/etc/apt $

2. Edit vi in lock screen mode

^ S	Lock screen, terminate screen terminal ECHO
^ Q	Restore normal mode

Note: If you are not familiar with the keyboard, that is to say, the typing speed is lower than 150, or the error rate is higher than 1%, we recommend that you do not touch these highly risky operations, otherwise you will be at your own risk.

3. Other supplements:

1. Summary of highlight in vi configuration file and search mode:

Configuration file:

Your @ your :~ $ Cd

Your @ your :~ $ Ll. vimrc

-Rw-r -- 1 your 31 Aug 7 04:13. vimrc

. File_name

"." Indicates hiding files in linux.

You can use ls-a to view hidden files.

-A, -- all

Do not ignore entries starting.

You can change the vi display in two modes:

Temporary	In the file
Permanent	In the. vimrc configuration file

 

Type the syntax that complies with vi

Highlight the search mode:

Permanent:

1. vi. vimrc

2. set hlsearch

Temporary:

1. vi file_name

2.: set hlsearch

Permanent:

1. vi. vimrc

2. Delete set hlsearch or comment

Note: In the configuration file of. vimrc, "Double quotation marks indicate annotations.

A syntax highlighting demo that enables line number display and search highlighting:

2. instructions before and after vi search mode:

/	Backward Search	N: Next N: Previous
?	Forward search	N: Previous N: Next

 

Forward <---- "N "----"? "--" N "--- souce ----" N "---"/"-----" n "---> backward

 

　

3. Run the linux Command in vi and mysql:

Environment	Method	Description
Vi	:! Linux_command	Create a new window to execute commands
Mysql	\! Linux_command Or System linux_command	Execute commands on the current mysql interactive interface Note :\! There is a space between it and the command, otherwise: Mysql> \! Pwd ERROR: Usage :\! Shell-command Mysql> \! Pwd; /Home/huhua Mysql>

System (\!) Execute a system shell command.

 

4. Advanced features: Use the SSH service to log on to a remote host:

Mysql	System ssh core@192.168.28.144
Vi	! Ssh core@192.168.28.144

5. vi Insert ":" the output of the mode execution command is in the current vi text.

: R! Linux_command

Both ping and ping can be imported into the text, but the ping output is not clear.