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One 、VIM Open file

vi  file name             	  Open file 
vi  file name  +          	  Open the file and navigate to the end of the file 
vi  file name  +  Row number        	  Open the file and navigate to the specified line 

Two 、 Display the line number and highlight the search content

sudo gedit /etc/vim/vimrc
 Add a line at the end 
set number
set hls

3、 ... and 、 exception handling

vim The terminal generates files during editing

. file name .swp

Reuse vim When you open it, you will be prompted

Four 、VIM Three models

 Command mode 
 Open the file and enter the command mode 
 location   Page turning   Copy   Paste   Delete 

 Last row mode 
 In command mode : Get into 
:w		 preservation 
:q		 sign out 
:wq		 Save and exit 
:x		 Save and exit 
:q!		 Exit without saving 
Esc		 Exit to command mode 

 edit 
 In command mode i Get into 
Esc		 Exit to command mode 

5、 ... and 、 Repeat the order

 Repeat command 
 Numbers   command 

6、 ... and 、 Mobile command

 Move in command mode 

 On 、 Next 、 Left 、 Right 
h	 towards the left 
j	 Down 
k	 Up 
l	 towards the right 

 Move in line 
w	 Move a word back 
b	 Move a word forward 
0	 Head of line 
^	 Head of line   The first position is not a blank character 
$	 At the end of the line 

 Rows move 
gg			 Top of file 
G			 end of file 
 Numbers gg		 Move to   Numbers   Number of corresponding lines 
 Numbers G		 Move to   Numbers   Number of corresponding lines 
: Digital carriage return 	 Move to   Numbers   Number of corresponding lines 

 Screen movement 
Ctrl + b 		| back |  Page up  |
Ctrl + f		| forward |  Page down  |
H 				| Head |  At the top of the screen  |
M 				| Middle |  In the middle of the screen  |
L 				| Low |  At the bottom of the screen  |

 Paragraph move 
 Look for blank lines 
| {
     |  Last paragraph  |
| } |  Next paragraph  |
| % |  Bracket matching and switching  |

 Mark 
| mx | mark |  Add tag  x,x  yes  a~z  perhaps  A~Z  Any letter between  |
| 'x |		|  Go straight to the mark  x  The position of  |
*  Marked  ** If the line is deleted **,** The tag is also deleted **
*  If  ** Tag with same name added to other lines **,** Previously added tags will also be replaced **

 Select the text  	 Can be used with the move command 
Esc	   		 Return to command mode 
| v |  Visual Modes  |  Select the text in normal mode from the cursor position  |
| V |  Visual line mode  |  Select the full line the cursor passes through  |
| Ctrl + v |  Visual block mode  |  Select text vertically  |

7、 ... and 、 Edit command

 revoke 
| u 		| undo |  Undo the last order  |
| CTRL + r	| redo |  To resume an order of revocation  |

 Delete 
| x				 | cut |  Delete cursor character , Or select the text  |
x You can delete the selected content   It can also be used with repeated commands 
| d( Mobile command )	 | delete |  Delete the content corresponding to the move command  |
| dd 			 | delete |  Deletes the line where the cursor is located , Sure  ndd  Copy many lines  |
| D 			 | delete |  Delete to end of line  |
* dw         Delete from cursor position to end of word 
* d0         Delete from cursor position to the beginning of a line 
* d}         Delete from the cursor position to the end of the paragraph 
* ndd        Delete continuously from the cursor down  n  That's ok 
* d Lines of code G    From the line where the cursor is   Delete to   Specify the line of code   All code between 
* d'a        From the line where the cursor is   Delete to   Mark a  All code between 

 Copy 
| y( Mobile command )	| copy |  Copy  |
| yy			| copy |  Duplicate a row , Sure  nyy  Copy many lines  |
| p				| paste |  Paste  |

** Tips **

*  command  `d`、`x`  Similar to the graphic interface  ** Cut operation ** —— `CTRL + X`
*  command  `y`  Similar to the graphic interface  ** Copy operation ** —— `CTRL + C`
*  command  `p`  Similar to the graphic interface  ** Paste operation ** —— `CTRL + V`
* `vi`  Medium  ** There is also only one text buffer **, If I do it later  ** Copy 、 shear **  operation , The contents of the previous buffer will be replaced 

** Be careful **

* `vi`  Medium  ** Text buffer **  And systematic  ** clipboard **  Not the same 
*  So use... In other software  `CTRL + C`  Copied content , Can't be in  `vi`  Pass through  `P`  Command paste 
*  Can be in  ** Edit mode （i）**  Next use  ** Right click to paste **

8、 ... and 、 Replace the command

| r | replace |  Replace the current character 			|  Command mode  |
| R | replace |  Replace the character after the current line cursor  	|  Replace mode  |

Nine 、 Indent and repeat

| >> |  Increase indent to the right  |
| << |  Decrease indent to the left  |
| .	 |  Repeat the last order  |
 Visual mode: select multiple lines at a time to increase or decrease indent 

* ** Indent order **  When developing programs ,** Add indents to the code **  More useful ！
    *  Disposable  ** Add... Before selecting code  4  A space **, It's called  ** Increase Indent **
    *  Disposable  ** Delete... Before selecting code  4  A space **, It's called  ** Reduce indent **
*  stay  ** Visual Modes **  Next , The indent command only needs to use  ** One ** `>`  perhaps  `<` 

Ten 、 Find content

| /str enter  |  lookup  str |

*  After finding the specified content , Use  `Next`  Find the next place to appear ：
    * `n`:  Find the next one 
    * `N`:  Find the last one 
*  If you don't want to see highlights , You can find any content that does not exist in a file 
| '*' |  Find the word of the current cursor backward  |
| '#' |  Look forward to the word where the current cursor is  |

11、 ... and 、 Find content

 Text substitution 
:%s/ Old text / New text /g

 Check replace 
:s/ Old text / New text /g

 Confirm replacement 
:%s/ Old text / New text /gc
 Select each highlight 
1. `y` - `yes`  Replace 
2. `n` - `no`  Do not replace 
3. `a` - `all`  Replace all 
4. `q` - `quit`  Quit replacing 
5. `l` - `last`  the last one , And move the cursor to the beginning of the line 
6. `^E`  Scroll down 
7. `^Y`  Scroll up 

Twelve 、 Insert command

 There are several different ways to enter insert Pattern 
| i | insert |  Insert text before current character  	|  Commonly used  |
| I | insert |  Insert text at the beginning of the line  		|  More commonly used  |
| a | append |  Add text... After the current character  	| |
| A | append |  Add text at the end of the line  		|  More commonly used  |
| o |		 |  Insert a blank line after the current line  	|  Commonly used  |
| O |		 |  Insert a blank line before the current line  	|  Commonly used  |

13、 ... and 、 Edit command walkthrough

 With numbers 
 Enter numbers consecutively x Duplicate content 
 Numbers x + i +  Repeat  + Esc
1.  Input  `10`, To repeat  10  Time 
2.  Input  `i`  Get into  ** Edit mode **
3.  Input  `*`  That is, repeated words 
4.  Press down  `ESC`  Back to  ** Command mode **, After returning  `vi`  Will put the second  `2、3`  Repeat the two steps  `10`  Time 

 utilize   Visual block   Add comments to multiple lines of code 
1.  Move to the  ** The first  1  Line code **, Press  `^`  Come to the head of the line 
2.  Press  `CTRL + v`  Get into  ** Visual block **  Pattern 
3.  Use  `j`  Select the lines of code you want to add in a row 
4.  Input  `I`  Get into  ** Edit mode **, And in  ** Insert... At the beginning of the line **, Be careful ： Be sure to use  **I**
5.  Input  `# `  That is, annotation symbols 
6.  Press down  `ESC`  Back to  ** Command mode **, After returning  `vi`  Every line of code that will be selected before  ** front **  Insert  `# `
^ + CTRL v +  Select row  + I + '#' Space  + Esc

fourteen 、 Last line command extension

| :e . 	| edit |  Will open the built-in file browser , Browse the files in the current directory   Enter by car |
:e  file name 	 Switch files   It can be used Tab completion   But the file must have been saved 
| :n  file name  | new |  New file  |
| :w  file name  | write |  Save as , But still edit the current file , Does not switch files  |

 Split screen operation 
| :sp [ file name ] | split |  Increase split screen horizontally  |
| :vsp [ file name ] | vertical split |  Add split screen vertically  |

 Control window 
>  Split windows are based on  `CTRL + W`  This shortcut is ,`w`  The corresponding English word is  `window`

| w | window |  Switch to the next window  |
| r | reverse |  Swap windows  |
| c | close |  Close the current window , But you can't close the last window  |
| q | quit |  Exit the current window , If it's the last window , Then close  vi |
| o | other |  Close other windows  |

| + |  |  Increase window height  |
| - |  |  Reduce window height  |
| > |  |  Increase window width  |
| < |  |  Reduce window width  |
| = |  |  Bisect window size   |