Vim of various uses, very practical, oh, I am in the work of learning and summary

(i) Beginner's personalized configuration your vim

1. What is VIM?

Vim is VI improved, an enhanced version of Editor VI, an extremely powerful editor for it engineers (programmers, OPS) habits. If you are a professional SE, be sure to look for an excellent editor that can be customized to fit your flexible editing capabilities. The answer, then, is vim or Emacs. This series of blog posts will introduce you to the VIM editor. As for another powerful editor Emacs, we'll see it in a series of blog post in the future.

2. Where is the configuration file?

The configuration file for the Windows system is the VIMRC file in the VIM installation directory.

Configuration files for Linux systems, Rhel and CentOS are/etc/vimrc,debian and Ubuntu profiles are/USR/SHARE/VIM/VIMRC.

The configuration file for Mac OS x is/USR/SHARE/VIM/VIMRC.

3. What does RC in VIMRC mean?

Why do you list such meaningless problems? The reason is simple, I was in touch with vim at the beginning of the second question to ask is this (the first one is the "1" above). In general, at the beginning of running a software, environment, or tool, some of the commands to be executed initially are called Run Commands, or RC. According to Wikipedia.org's record, the use of the RC abbreviation originates from the compatible time-sharing operating system of MIT (Compatible time-sharing system,ctss) [Reference 1]. So if you see SYSTEMRC or SCREENRC in the future, you'll know why.

4. Three basic modes

In the "Everyone to learn Vim" mentioned Vim has 6+5 mode, but in addition to the degree of subdivision of different, in fact, there are only 3 modes: Normal mode, Insert mode and command-line mode.

From normal mode into insert mode, you can press I, I, A, A, O, O, R, R. Where I and I represent insert (insert), R and R represent substitution (replace).

To enter normal mode from insert mode, simply press the ESC key.

To enter command-line mode from normal mode, you can press ":", "/", "?". where ":" means the input vim command, "/" indicates the following string to search down, "?" Represents the following input to search for a string.

To enter normal mode from command-line mode, simply press the ESC key.

You can think of normal mode as normal, enter any other mode, need some special way, and go back to normal mode from other special modes, then press the ESC key.

5. The most commonly used configuration in vim

When you try to go to Google for some other people's VIMRC configuration, you will certainly find an article called "The Ultimate Vim Configuration", but its author, Amix later mentioned on his blog [Reference 2], This vim profile, which is ranked in the top ten in Google search VIMRC, is now obsolete, so he provides some updated information.

(1) Color setting

Syntax on "Turn on code highlighting
Syntax off "off code highlighting
Syntax enable "Turn on code highlighting

(2) Search settings

Set Hlsearch "Turn on search highlighting
Set Nohlsearch "Turn off search highlighting
Set Incsearch "Enter search string while searching
Set IgnoreCase "Ignore case when searching"

(3) User interface

Set Showmode "Open mode display
Set ruler "Turn on cursor position prompt
Set number "Displays line numbers
Set Nonu "does not display line numbers
Set Cursorline "emphasizes that the cursor is in the row
Set cmdheight=1 "Command section height is 1

(4) Edit secondary configuration

Set autoindent "Auto Indent
Set noautoindent "Do not indent automatically
Set Smartindent "Smart indent
Set Autoread "When the file is externally changed, VIM automatically updates the load
Set Showmatch "Display matching parentheses

Reference:

Run Commands,http://en.wikipedia.org/wiki/run_commands
The Ultimate vim Configuration (VimRC), http://amix.dk/blog/post/19486

(ii) commonly used status switch buttons

1. Insert mode, Normal mode

I small Letter I, inserted at cursor position
A small letter A, inserted at the next position of the cursor
I capital letter I, inserted at the first non-space of the line where the cursor is located
A capital letter A, inserted in the last word of the line where the cursor is prompt
o Small Letter o, inserting a new row at the next line of the cursor
O Capital letter O, inserting a new flight at the top line of the row where the cursor is located
R Small Letter R, replacing the character at the cursor at once
R Capital Letter R, which continuously replaces the character at which the cursor is located until the ESC is pressed

2, Normal mode, command-line mode

: W Save File
: w! Force the file to be saved (provided that the user has permission to modify the file access rights)
: Q Exit Buffer
: q! Force exit buffer without saving
: Wq save file and exit buffer
: wq! Force the file to be saved and exit the buffer (provided that the user has permission to modify the file access permissions)

: W saved as filename file
: n1,n2 w Save data N1 line to N2 row as filename file
: x If the file has changed, exit after saving. Otherwise, exit directly.

3. Insert mode, Normal mode

Press the ESC key

4, command-line, Normal Mode

Press the ESC key

(c) Common cursor movement buttons

1. Cursor character manipulation

J Down
K Up
H Left
L Right
$ cursor moves to end of line, note to press the SHIFT key
0 cursor moves to the beginning of the line (Home)
^ The cursor moves to the first non-whitespace character (Home) at the beginning of the line, note to press the SHIFT key

2. Cursor Word manipulation

W cursor moves to the beginning of the last word
W cursor moves to the beginning of the last word and ignores punctuation
e cursor moves to the suffix of the latter word
E cursor moves to the ending of the last word and ignores punctuation
b cursor moves to the beginning of the first word
B cursor moves to the beginning of the previous word and ignores punctuation

3. Cursor sentence operation

The cursor moves to the beginning of the last sentence
(The cursor moves to the beginning of the previous sentence
% mates "(" and ")" used to look for matching the other half

4, Cursor line operation

G cursor moves to the first non-whitespace character of the last line of the document
NG cursor moves to the nth line of the document, equivalent to ": N"
The GG cursor moves to the first non-whitespace character in line 1th of the document, equivalent to "1G", or ": 1″
Move the cursor down n rows

5. Cursor segment operation

The cursor moves to the beginning of the next paragraph
{cursor moves to the beginning of the previous paragraph
% mates "(" and ")" used to look for matching the other half

6. Cursor page operation

Ctrl+f PAGE Down (Pagedown)
Ctrl+b page Up (Pageup)
Ctrl+d down Half page
Ctrl+u up half a page
H cursor moves to the first line of the currently displayed page
M cursor moves to the middle row of the currently displayed page
L cursor moves to the last line of the currently displayed page

7. Free cursor operation

Ctrl+o back to the previous position of the cursor

(iv) common editing operation buttons

1. Delete operation

DD deletes the cursor in the row
NDD Delete starts at the line where the cursor is located, n rows down
D1G Delete all rows from the first line, starting at the line where the cursor is located
DG Delete all rows from the line where the cursor is located, to the last row
d$ Delete all characters from the cursor position to the end of the line
D0 Delete all characters from the position of the cursor to the beginning of the line

2. Copy operation (Yank)

YY the copy cursor is in the row
Nyy copy starts at the line where the cursor is located, n rows down
Y1G copy starts at the line where the cursor is located, to all rows in the first row
YG copy starts at the line where the cursor is located, to all rows in the last row
y$ copy all characters from the cursor position to the end of the line
Y0 Copy all characters from the cursor position to the beginning of the line

3. Paste operation (paste)

P lowercase p, pastes data from the Clipboard, starting at the next line in the row where the cursor is located
P Capital Letter p, pastes data from the Clipboard, starting at the top row of the line where the cursor is located

4. Undo and Redo Operations (Undo,redo)

U (undo) Undo Last action
Ctrl+r (Redo) Redo last action

5. Repeat operation

. Repeat Last Action

6. Replacement operation (replace)

R replaces the character at which the cursor is located
R Enter replacement mode until you press ESC to exit
CC replacement cursor is in the row
CW Replace the English word where the cursor is located
~ Convert case

7. Typesetting operation

: Le cursor Line is aligned to the left
: Right alignment of the RI cursor line
: Center of the line where the CE cursor is located

(v) Common multi-buffer operation keys

1. Multi-file editing mode

argument list mode, which is when you open the Vim editor, carries multiple file path parameters.
The buffer list mode opens multiple buffers for editing after entering the Vim editor.

2. Open multiple files in a single buffer

: Files shows which documents are currently open
: N switches to the next buffer content
: N switches to the previous buffer contents
: 2n switch to next buffer content
: Bn Next buffers content (buffer next)
: BP previous buffer content (buffers previous)

3. Multiple buffers open multiple files

: SP [filename] opens a new buffer, if there is a filename then the content is the file, otherwise the current file
Ctrl+w n Create a new buffer
CTRL+W Q exits the buffer where the cursor is located
Ctrl+w J Cursor moves to the next buffer
Ctrl+w k cursor moves to the previous buffer
Ctrl+w l cursor moves to the right buffer
Ctrl+w h cursor moves to the left buffer
Ctrl+w v left and right cutting window new buffer
Ctrl+w s up and down cutting window new buffer
Ctrl+w o maximizes the buffer in which the cursor is located, and other buffers are hidden

(vi) Common Search and bookmark operation shortcut keys

1. Searching for strings

/string search string "string" down? String up

2. Repeat Last Search

N finds the next matching string based on the last search criteria N finds the last matched string based on the previous search criteria

3. Search for words

* Search down the word at the cursor (exact match) # Search for the word (exact match) where the cursor is located g* down search for the word (partial match) where the cursor is located g# up the word that the cursor is in (partial match)

4. Tag bookmarks (Mark)

Ma A is a lowercase letter, setting the document bookmark at the cursor location AMA A is uppercase, setting the global bookmark A at the cursor location

5. Using Bookmarks (Mark)

' A to document bookmark A, tab ' A to document bookmark A at the beginning of the line, enter the left ' A to the global bookmark A, the TAB key ' A to the global bookmark A at the beginning of the line, enter key to the left ' N if n=0, the buffer will open the last document, And the cursor at the last edit position, 1-9 and so on ' n if n=0, the buffer will open the previous document, and the cursor at the end of the last edit position at the beginning of the line, 1-9 and so on

6. View the Bookmark list

: Marks view all current bookmarks

(7) About encryption

1. Encrypt your text file

When you open or create a new file with Vim, if you add the-x parameter, that is:

Vim-x filename

Then Vim will prompt you to:

Enter entryption Key:

When you enter a password, Vim prompts you to repeat the input to confirm that:

Enter Same Key again:

When you set the password, it is displayed in *, non-plaintext. The next time someone (including yourself) opens the file, Vim will prompt you:

Need encryption key for "Main.cpp"
Enter Encryption Key:

You just have to enter the password you've previously set. If the password you entered is wrong, VIM does not prompt you for the wrong password, but instead displays a bunch of meaningless garbage codes.

2. de-encrypt and reset the password

Open the file that you have encrypted, and then enter:

: Set key=

In this way, your password is set to empty and you will no longer need to enter a password to enter it in the future. And if you reset the password, you can enter:

: X

Note that it is an uppercase X. At this point vim will prompt you, as long as the repeated input two times the new password can be:

Enter entryption Key: * * * *
Enter Sanme Key again: * * * *

3. Problems caused by encryption

Vim's cryptographic function can be said to be a lot of problems. Like what:

(1) If the password is entered incorrectly, VIM will not deny the visitor to edit the file. In the case of garbled display and edit the file and save, the entire file will become chaotic, unrecognizable. In the future, even if you open the file with the correct password, you will not see the correct document.

(2) If a source code file that needs to be compiled is encrypted, it cannot be checked by the compiler's syntax.

(3) The interchange file cannot be encrypted. What's causing the problem? The problem is that if other users try to read your swap file, you can bypass the decryption process and your encryption will be meaningless. The workaround is to not use the swap file. There are three methods, one is to modify your VIMRC file (vim config file):

Set Noswapfile

The second is to use VIM to open the file at the beginning of the input command:

Vim-x-n filename

(Note that-X is an encryption parameter that doesn't matter what we call swap, don't confuse it)

Third, after entering vim to edit the file, enter:

: setlocal noswapfile

But the downside of not using swap files is that you may face a tragic loss of data that cannot be recovered. So want to use encryption, and do not want to lose the files of friends, the Diligent press ": W" bar.

Vim of various uses, very practical, oh, I am in the work of learning and summary