[3. VIM operation]

$moregoodOfreadingreadbodyExamination$

3.1 Vim brief introduction

function ：

• Text editor in command line mode .
• Automatically identify the programming language according to the file extension . Support code indentation 、 Code highlighting and other functions .
• Usage mode ：vim filename
  If the file already exists , Open it .
  If there is no such document , Then open a new file , And named it filename

Pattern ：

• General command mode ：
  The default mode . Command input mode ： Similar to playing games, playing skills , According to different characters , You can perform different operations . Can copy 、 Paste 、 Delete text, etc .
• Edit mode ：
  In general command mode, press i, Will enter edit mode .
  Press down ESC Will exit edit mode , Return to normal command mode .
• Command line mode ：
  In general command mode, press :/? Any of the three letters , Will enter command line mode . The command line is at the bottom .
  Can find 、 Replace 、 preservation 、 sign out 、 Configuration editor, etc .

---

3.2 Mode conversion

• i： Enter edit mode
• ESC： Enter general command mode
• :/? Any of the three letters , Enter command line mode

---

3.3 Move and jump

• h or Left arrow key ： Move the cursor one character to the left
  j or down arrow ： Move the cursor down one character
  k or up arrow ： Move the cursor up one character
  l or Right arrow ： Move the cursor one character to the right
• n <Space>：n Representation number , Press the number and then the space , The cursor will move this line to the right n Characters
• n <Enter>：n Is the number , Cursor down n That's ok
• 0 or Function keys [Home]： Move the cursor to the beginning of the line
• $ or Function keys [End]： Move the cursor to the end of the line
• G： The cursor moves to the last line
• :n or nG：n Is the number , Move the cursor to the n That's ok
• gg： Move the cursor to the first line , amount to 1G

---

3.4 Find and replace

• /word： Look under the cursor for the first value to be word String .
• ?word： Look over the cursor and the first value is word String .
• n： Repeat the previous find operation
• N： Repeat the previous lookup operation in reverse
• :n1,n2s/word1/word2/g：n1 And n2 Is the number , In the n1 Line with n2 Look between lines word1 This string , And replace the string with word2
• :1,$s/word1/word2/g： The full text of word1 Replace with word2
• :1,$s/word1/word2/gc： The full text of word1 Replace with word2, And the user is required to confirm before replacement .

---

3.5 Text operation

• v： Select the text
• d： Delete the selected text
• dd: Delete current row
• y： Copy the selected text
• yy: Copy the current row
• p: Place the copied data on the next line of the cursor / Paste in the next position
• u： revoke
• Ctrl + r： Cancel cancellation
• More than no. >： Indent the entire selected text to the right once
• Less than no. <： Indent the entire selected text to the left once

---

3.6 Paste mode

• :set paste Set to paste mode , Cancel code auto indent
• :set nopaste Cancel paste mode , Turn on code auto indent
• :set nu According to the line Numbers
• :set nonu Hide line numbers
• gg=G： Format the full-text code
• :noh Turn off search keyword highlighting

---

3.7 Save and exit

• :w： preservation
• :w! ： Force save
• :q ： sign out
• :q!： Forced exit
• :wq ： Save and exit
• :wq!： Force save and exit

---

3.8 exception handling

• Ctrl + q： When vim Dead time , You can cancel the currently executing command
• Each time vim When editing a file , It will automatically create one .filename.swp Temporary files for . If you open a file , Of the document swp file already exist , May be an error . There are two solutions ：
  1. Find the program that is opening the file , And exit
  2. Just delete the swp File can