1. Open the file
vim + #: open the file, and locate at line #
vim +: open the file and navigate to the last line
vim +/PATTERN: Open the file and navigate to the beginning of the line matched by PATTERN for the first time
2. Close the file
:q quit
:wq save and exit equals :x equals zz in edit mode
:q! Force quit without saving
:w save
:w! force save
Three, mode conversion
Edit Mode -> Input Mode
i: In front of the character where the current cursor is, switch to input mode
a: After the character where the current cursor is located, switch to input mode
o: Create a new line below the current cursor line and switch to input mode
I: At the beginning of the line where the current cursor is located, switch to input mode
A: At the end of the line where the current cursor is located, switch to input mode
O: Above the line where the current cursor is located, create a new line and switch to input mode
Input Mode -> Edit Mode
ESC
Edit Mode -> Last Line Mode
：
Last Line Mode -> Edit Mode
ESC
Edit Mode -> Visual Mode
v In visual mode, you can freely select from the cursor position, and then delete, copy and other operations on the selected content
4. Move the cursor (edit mode)
1. Move character by character
h, j, k, l: left, down, up, right
2. Move by word
w: skip to the beginning of the next word
e: skip to the end of the current or next word
b: skip to the beginning of the current or previous word
3. Inline jump
0: absolute line start
^: the first non-whitespace character at the beginning of the line
$: absolute line ending
4. Jump between lines
#G: Jump to line # is equal to the last line mode: # Just give the line number directly
G: Jump to the last line is equal to the last line mode: $
Five, flip the screen
ctrl + d: scroll down half screen
ctrl + u: scroll up half screen
ctrl + f: scroll up one screen
ctrl + b: scroll down one screen
6. Delete
1. Delete a single character
x: delete the single character where the cursor is
2. The d command is used in combination with the jump command
dw, de, db delete a word after/before the current cursor
dd: delete the line where the current cursor is located
#dd: delete # lines including the line where the current cursor is located
7. Copy and paste
1. Copy y usage is the same as d command
2. Paste p or P
8. Replacement
r #: replace the current character with #
R: replace pattern
9. Undo editing
u: undo the previous editing operation, continuous u command can be undone all the way forward
ctrl + r : undo the last undo
10. Repeat the previous editing operation
Eleven, find and replace
/PATTERN: Search for PATTERN from the beginning of the cursor to the end of the file
?PATTERN: Search for PATTERN from the beginning of the cursor to the beginning of the file
n: Repeat the last search command in the same direction
N: Repeat the last search command in the reverse direction
:s/p1/p2/g replace all p1 with p2 in the current line
:n1,n2s/p1/p2/g replace all p1 in lines n1 to n2 with p2
:%s/p1/p2/g replace all p1 in the file with p2