"vim--Study Notes"

Vim is divided into three different modes: Command mode, edit mode, last line mode.

Command mode: Copy, paste, replace, move cursor search and so on.

Edit mode: Used to add, delete, modify, and so on the document.

Last-line mode: File save, launch, position cursor, find replace, set line label and so on.

Enter edit mode commands and explanations:
I: Inserts text from the beginning of the cursor position, similar to the Insert key.
I: Inserts text from the beginning of the line where the cursor is located.
A: Insert text from behind the cursor position.
A: Inserts text from the end of the line where the cursor is located.
S: Deletes the character of the cursor and begins inserting text.
S: Deletes the line of the cursor and begins inserting text.
O: Add a line below the line where the cursor is located and start inserting text.
O: Add a line above the line where the cursor is located and start inserting text.
R: The character that replaces the position of the cursor.
R: Replace the cursor with the position, and always replace until you press ESC.
U: Restores a single character operation at the location of the cursor.
U: Restores the action of the line where the cursor is located.
Ctrl+r: Repeats the last action.
J: Merges the row and the next line of the cursor.

Enter the last-line mode command and explanation:
: Enter the command you want to execute below the command mode.
/Enter the search string below the command mode, search down from the cursor position, press N to repeat the previous search action, and repeat the previous search action in n direction.
？ Enter the search string below the command mode, search up from the cursor position, press N to repeat the previous search action, and press N to reverse the previous search action.

Launch Vim editor commands and explanations:
Q: No changes have been made to the document, exit.
q!: There have been modifications to the document, but the wallpaper does not save the exit.
QW or x: Save the changes to the document and add it after the command! Indicates that the save is forced to exit.
ZZ: If the document is not modified, the exit is not saved, and if the document has been modified, it is saved and then exited.

Shortcut command:
X/X/NX: Delete one or n characters backward/forward
DD/NDD: Delete Row of cursor or delete n rows down
D1G/DGG: Removes all data from the cursor position to the first row
DG: Remove all data from the cursor position to the last row
d0/d$: Deletes the cursor position to the beginning/end of the line
CW/NCW: Change a character or n characters of the cursor position
Yy/nyy: Copy cursor position to first row or down n rows
Y1g/ygg: Copy the cursor position to all rows in the first row
YG: Copies all lines of the cursor position to the last line
y0/y$: Copy the cursor position to the beginning or end of the line
YW/NYW: Copy cursor position of one character or n characters
p/p: Paste to the next/previous line in the cursor position

Cursor Movement shortcut keys:
H/J/K/L: Cursor left/bottom/up/Right
NJ: Move Down n rows
CTRL+F/B/U/D: Screen down/up/move half page/move one page
N<SPACE>: The cursor moves backwards n characters
N<ENTER>: Move the cursor down n rows
H/M/L: Cursor moves to screen/middle/Bottom
+/-: Cursor moves to the next/previous line of non-null characters
o/^: Cursor moves to the beginning of the line
$: Cursor moves to end of line
GG: Cursor moves to first line
G: Cursor moves to the last line
NG: Cursor moves to nth row

Vim in the last-line mode of common operations:
N1,n2s/word1/word2/g: The word1 from the N1 line to the N2 row is replaced with Word2, and if not, G replaces only the first match.
1, $s/word1/word2/gc: replace the word1 between the first line and the last row with Word2,c for each acknowledgment.
%s/^/word2/g: Insert Word2 at the beginning of each line of the file
%S/$/WORD2/G: Inserts the entire file at the end of each line Word2
%/var/char-&/g: After matching to Var in the entire file, replace with char-var,& to refer to the result of the match, may be a regular match of multiple results, may be a regular match multiple results.

Other commands commonly used in last-line mode:
w/w! : Save File/Force save file
W FileName: Save as FileName file
N1,N2 w FileName: Save as FileName file from N1 to N2 row
R filename: read a different file to the file you are editing
! Command: Temporarily leave VI to execute commands
R! Command: Inserts the output of the commands into the current
SH: Turn the shell, enter exit to return
e!: Restoring a file
Set Nu/set Nonu: Sets line number/Cancel line number
Set Autoindent: Sets Auto-Gill (cancels set noautoindent)
Set ruler: Setting the bottom of the screen displays the row and column position of the cursor
Set ignorecase: Ignores casing in regular expressions
No HL search: Remove highlighted keywords from search

Other actions of Vim
Block Operation:
Press V in command mode to enter operation, move cursor selected action block, press Y to copy, press C to cut, press p to paste.
Horizontally separates window commands while horizontally arranging open files File1.txt and file.txt
[[email protected] ~]# vim -o file1.txt file.txt

Vertically separates window commands while vertically arranging open files File1.txt and file.txt
[[email protected] ~]# vim -m -o file1.txt file.txt

Window move shortcut key: ctrl+w

Problem:
If the file editing process VI is not properly closed, then re-open the VI test.txt is, the system will be prompted to find the swap file. Test.txt.swp, possible reasons are:
1. Another program is also editing the same file
2. Last edited this file is a crash

Workaround:
1. You can press O read-only open, or R for repair, or E to edit directly, or Q to exit
2. After you manually delete the. TEST.TXT.SWP, the prompt does not appear again.

"vim--Study Notes"