Basic usage of VIM editor

VI Editor: Full-screen text editor
Vi:visual interface, visual interface;
Vim:vi improved
Vim has more new features relative to VI:
1. Syntax coloring display;
2. More orders;
3. Historical records;

Vi: Patterned text editor
           mode:
                  Edit mode (command mode), default working mode
                  Insert mode (input mode), free editing of text information; "Insert" mark in the lower left corner;
                  Ex mode (last line mode), for the editor's own properties and function settings, you can also edit the text;

                  Other auxiliary modes:
                         Replacement mode: The input information directly replaces the content of the cursor position;
                         Visualization mode:

    Vi/vim operation:

First, open the Vi/vim operator interface;
1.vi/vim order;
2.vimfile:
1) file exists, directly using the VIM editor to open it, the default is to place the cursor in the file's starting file location, namely: the first character of the first line;
2) file does not exist, it is opened directly as a new file, if you execute the Save command, the files will be written to disk, if not saved, the file will disappear.
3.vim+# file:
When the specified file is opened, the cursor is positioned directly at the beginning of the # line of the file, and if the given number is larger than the number of rows in the file, the cursor stays at the beginning of the last line;
4.vim+ file:
When you open the specified file, position the cursor directly at the beginning of the last line of the file.
5.vim+/pattern/:
When you open the specified file, position the cursor at the beginning of the line that was first matched to the pattern;

Two. Close the operating interface of the Vi/vim;
Operations in the EX mode:
: Q
Directly close the Vim editor, do not save the modified content;
: q!
Close the Vim editor directly, forcing the exit without saving the modified content;
: Wq
Save the modified content and close the Vim editor;
: wq!
Force save for files that do not have permission to change, and force the Vim editor to close after forcing save;

Operation in edit mode:
                         ZZ: Save and close the vim editor;
                         ZQ: Do not save the modified content, directly close the vim editor;

Three. In Vim's edit mode, the cursor moves:
cursor Movement in edit mode:
1. Character movement:
1) left ARROW or RIGHT ARROW
2) H: The cursor moves to the right; Move Word by Word:
W: Move the cursor to the beginning of the next word;
E: Move the cursor to the end of the current word or the next word;
B: Move the cursor to the first word;
3. Inline cursor Jump
0: Absolute start of the line
^: Relative beginning
$: absolute end of line
4. Between the lines Jump
1) up ARROW or down arrow;
2) J: Move down one line; K: Move up one line;
3) #G: Move the cursor directly to the beginning of line #;
4) G: Move the cursor directly to the last line of the document;
5) GG: Move the cursor directly to the first line of the document;
Ex mode cursor movement:
: #: Move the cursor directly to the beginning of line #;
: L: Move the cursor directly to the beginning of the first line of the document;
: Move the cursor directly to the beginning of the last line of the document;
Four. Page turn
PageDown or pageup can be turned on;
^+f: Scroll down one page, turn one page forward, equivalent to PgDn;
^+b: Turn up one page, turn back one page, equivalent to PgUp;
^+d: Turn half page down;
^+ U: Turn up half a page;
five. Delete character;
action in edit mode
1. Character deletion:
x: Delete the characters at the cursor location,
x: Delete one character to the left of the cursor position,
2. Delete all the content that passes through the cursor;
D: Removes all characters passed during the cursor movement;

Dh, dl, dj, dk, dArrow, dw, de, db, dG, dgg, d0, d$, d^

                                Dd: delete the line where the current cursor is located;
                  Operation in ex mode:
                  :d: delete the line where the cursor is located; equivalent to: .d; where "." refers to the current line;
                  :#d: Delete the ## line;
                  :m,nd: delete all lines starting from the mth line and ending in the middle of the nth line;
                  :m,+nd: deletes the content starting from the mth line and the following n lines;
                  :.,+nd: deletes the content starting from the current cursor line and the following n lines;
                  :.,$d: Delete everything from the current cursor line to the end of the document;

                  Note: In the operation of vim, all delete operations mean shearing at the same time;

Six. Copy commands
Actions in edit mode:
Y: Copy all the content that passes through the cursor during movement;

Yh,yl,yj,yk,yArrow,yw,ye...
                         Yy: copy the line where the current cursor is located;
                  Replication in ex mode:
                  :y: copy the line where the cursor is located; equivalent to: .d; where "." refers to the current line;
                  :#y: Copy the ## line;
                  :m,ny: copy all lines starting from the mth line to the end of the nth line;
                  :m,+ny: copy the content starting from the mth line and the following n lines;
                  :.,+ny: copy the content starting from the current cursor line and the following n lines;
                  :.,$y: Copy everything from the current cursor line to the end of the document;

Seven. Paste command:
operation in edit mode
P (lower); If you are copying or cutting within a row, paste is done on the right side of the cursor, and if it is a multiline copy or cut operation, paste at the bottom of the cursor;
P (Upper): If it is a copy or cut operation within a row, Paste on the right side of the cursor, or in the case of multi-line copy or cut operations, paste on top of the cursor;
Ex mode:
: P
Eight. Mode toggle:
Edit mode (Command mode) is called the VI Editor's basic working mode; a broker that switches between all other modes

1. Edit mode --> ex mode:
                        ":": indicates entering the ex mode and completing the execution of the command;
                        "/" or "?": Start the match search function in ex mode;
                               /: The default is the top-down search order;
                               ? : The default is the bottom-up search order;

                        The n and N commands jump between the matching keywords:
                               n: sequential search
                               N: reverse search
                 2.ex mode --> edit mode:
                        Esc
                        Enter
                        Backspace
                 3. Edit mode --> input mode (insert mode):
                        i, I, a, A, o, O, s, S, C, cc
                        i: Start input on the left side of the cursor position;
                        I: Start typing at the beginning of the line;
                        a: Start inserting on the right side of the cursor position;
                        A: Start typing at the end of the line;
                        o: insert a new line below the current cursor line;
                        O: Insert a new line above the current cursor line;
                        s: delete the character at the cursor position and start input on the left side of the cursor;
                        S: delete the line where the cursor is located, and start input at the beginning of the line;
                        C: delete the cursor position until the end of the line, and start input at the end of the line;
                        Cc: equivalent to S mode;
                 4. Input mode --> edit mode
                        Esc
                 5. Edit mode --> replacement mode
                        R: enter the replacement mode
                 6. Replace mode --> edit mode
                        Esc
                 7. Edit mode --> visualization mode
                        v: rectangle selection according to characters;
                        V: Select a rectangle according to the unit of action;

                        note:
                               1) After the selection is completed, you can use the d command to delete, or you can use the y command to copy;
                               2) As soon as the selection is completed, it will return to the edit mode immediately;

                        Note: All other modes can only be switched to and from the edit mode: if the two non-edit modes attempt to switch, they must go through the edit mode.

Nine. Replacement mode:
R: The character that replaces the cursor position without entering the input mode;

10. Undo the command:
U: Undo the operation in the current line;
U: Undo the previous edit operation;

^+r: Undo the last undo operation;

11. Repeat the previous edit operation;
.
12. Open multi-document editing;
1.vimfile1 file2 file3 ...
: Next to view or edit the latter document
: prev Viewing or editing a previous document
: First to view or edit one document
: Last view or edit Final Document

2.vim-o | -O file1 file2 file3..
                         -o: Open multiple windows horizontally
                                ^+w,uparrow | down arrow;Switch between multiple windows;
                         -O: Open multiple windows vertically
                                ^+w,leftarrow | right arrow; switch between multiple windows;
                         :qa: quit all 

13. Common commands in the EX mode:
1. Display and cancel line numbering:
: Set Number (abbreviated: Set NU): Displays line numbering
: Set Nonumber (abbreviated: Set Nonu): Row numbering is canceled
2. Turn the sensitivity of character case on or off:
: Set ignorecase (Set IC)
: Set Noignorecase (set Noic)
3. Turn the Auto Indent feature on or off:
: Set Autoindent (abbreviated as: Set AI)
: Set Noautoindent (abbreviated as: Set Noai)
4. Turn syntax coloring on or off:
: Syntax on
: Syntax off
5. Turn on or off find highlighting
: Set Hlsearch
: Set Nohlsearch (abbreviated as: Nohl)
6. Save As:
: W/path/to/somewhere all Save As
: M,nw/path/to/somewhere Partial Save As
7. Read content directly from other files and add to current folder
: R/path/from/somefile
8 Interacting with the shell, invoking the shell command
：！ Shell command

Basic usage of VIM editor