Common VI usage

Normal Mode

I-> editing mode

:-> Command mode

The ESC key can be returned from the editing or command mode to the general mode.

In normal mode,
Cursor
Move: always valid →
Page flip: Pageup/Pagedown
0: move the cursor to the beginning of the current row
$: Move the cursor to the end of the current row
G: move the cursor to the end of the file.
NG: move the cursor to line N of the file.
GG: move the cursor to the first line of the file (equivalent to 1G)
Search and replace
? Word: query a string named word from the cursor up. You can repeat up and down by N, N
/Word: query a string named word from the cursor down. You can repeat down by N, N and query up
: N: the nth line of the object.
: N1, N2s/word1/word2/G: N1 and N2 are numbers. Search for the word1 string between line N1 and line N2, and replace this string with word2.
: 1, $ S/word1/word2/G: searches for the word1 string from the first row to the last row, and replaces the string with word2.
: 1, $ S/word1/word2/GC: searches for the word1 string from the first row to the last row, and requests the user to confirm before replacing it with word2
Delete, copy, and paste
X, X: in a row, X deletes one character backward, and X deletes one character forward.
DD: Delete the row where the cursor is located.
NDD: delete n rows from the row where the cursor is located
YY: copy the row where the cursor is located
Nyy: Copy n rows down from the row where the cursor is located
P, P: P inserts data from the clipboard into the row where the cursor is located, and P inserts data into the row where the cursor is located.
U: Restore the previous operation
CTRL + R: redo the previous operation
Decimal point '.': Repeat the previous action

In command mode,
: Set nu-> display row number
: W-> write edited data to the hard disk
: Q-> exit
: Q! -> Force exit
The preceding three commands can be used in combination.

Additional commands
Block Selection
V: display the area where the cursor passes in white
V: select the line through which the cursor goes through
CTRL + V: block selection. You can select data in a rectangle.
Y: copy the anti-whitelist
D: Delete the whitelist.

Multiple windows
: SP [filename]: opens a new window. If filename is added, a new file is opened in the new window; otherwise, the two windows are the same file content.
CTRL + W
J: move the cursor to the window below
K: move the cursor to the window above

Common VI usage