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①Command line mode ①Insert mode (enter file editing, press ESC to enter bottom line mode) ③Bottom line Mode
2. vi mode switching command
a a ---> [Enter the editing state, insert one character after the current cursor position]
i ---> [Enter the editing state, insert characters from the previous position of the current cursor]
-> [Enter the editing state, insert characters from the beginning of the current line]
o ---> [Enter the editing state, insert a line, move the cursor to the beginning of the line and start inserting characters]
O ---> [Enter the editing state, add a blank line before the cursor, move the cursor to the beginning of the line and start inserting characters]
ESC ---> Enter the command state
:![ Command] Execute external Command command in vi editor [:!date] View the current time
3, paste and copy
[N]x ---> (Expurgate) Delete from N consecutive characters starting from the cursor
[N]yy - --> (yank) Responsible for moving N lines from the cursor to the buffer
p(P) ---> (Put) Responsible for moving text from the editing buffer to the cursor
u ---> (undo) Cancel the last operation
4, save and exit
:q ---> (quit) Exit the unmodified file
:w ---> (Write) Save the file without exiting
:x -- -> (Exit) Save the file and exit
:w File ---> Save as File, do not exit
:r File ---> Read the File content and insert it into Cursor position
5. [Advanced command] Cursor command
h ---> Move left
j --->Move down
k Move up
:N :N ---> Move the cursor to line N
1G ---> Move to The first line of the cursor’s file
G ---> Move to the last line
:set number ---> Set the displayed line number
:set nonumber - --> Cancel display of line number
6. [Advanced command] Search command
/string ---> Search string [n continues to search downwards, N continues to search in reverse direction , supports regular expression search: /^the】
Use the :s command to implement string replacement
:s/str1/str2/g ---> g Replace all, without g only replace one
: .,$s/str1/str2/g ---> Replace the current line to the last line
:1,$s/str1/str2/g ---> The first line to the last line, full text
: %s/str1/str2/g ---> Full text
8. [Advanced command] is responsible for cutting commands
y0 ---> Copy the cursor to the beginning of the line, [copy part of the line]
d0 ---> Cursor to the line Cut the first character into the clipboard
d$ ---> Cut the character from the cursor to the end of the line into the clipboard
range y ---> Block copy, [: 119,125 y] [:,$y]
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