4th Chapter Text Editor vim

1. Vim Common Operation

1.1 Vim Introduction

(1) Vim is a powerful full- screen text editor , which is the most commonly used text editor on Linux/unix, and its function is to create, edit and display text files.

(2) Vim has no menu, only commands.

(3) Installation of Vim editor

① 4 Mounting packages required Vim-filesystem, Vim-common, vim-enhanced, Vim-minimal

② View the existing packages for this machine: #rpm –qa | grep vim

③ Installing the VIM Editor: Yum–y install vim*

1.2 Vim settings for the editor

(1) Modify the configuration file/ETC/VIMRC or #~/.vimrc

① Auto Indent by C syntax: Set cindent, such as press {, then change line Auto Indent

　　② Auto Indent: set Autoindent

　　③ Add line number :set Nu

　　④tab indent 4 characters :set tabstop=4

(2) Multi-file concurrent operation ( mainly used for copying and pasting in different files )

① open multiple files simultaneously: #vim test1.c test2.c test3.c

② in the last line mode, view open file:: args, then display below, [test1.c] test2.c test3.c, where add [] file represents the file currently being edited

③ switch to another file:: First,: Next,:p rev,: Last

1.3 Vim Mode of Operation

(1) 3 modes of operation and switching

(2) Basic editing

　① Insert Command

Command	Role
A	Insert in the word specifier the cursor
A	Insert at the end of the line where the cursor is
I	Insert in the word match either the cursor
I	Insert at the beginning of the cursor
O	Insert a new line under the cursor
O	Insert a new line on the cursor
S	Remove the light-setting characters and enter insert mode
S	Clears (contents) the line where the cursor is located and enters insert mode

　② Positioning commands

: Set nu

command	effect
Set line number
Cancel line number
GG	to first line
G	to the last line
NG (n Go)	to Nth line
: n	to Nth line
$	Move to end of line
0 (number 0)	Move beginning

③ Delete command

Command	Role
X	Delete the character at the cursor location
Nx	Delete the first n characters at the cursor location
Dd	Delete Row of cursor, NDD delete n rows
Dg	Delete the line from the cursor to the end of the file
D	Delete the cursor at the end of the line
: n1,n2d	Delete a specified range of rows

④ copy and Cut commands

Command	Role
Yy	Copy when moving forward
Nyy	Copy the following n rows of the current row
Dd	Cut when moving forward
Ndd	Cut the following n rows of the current row
D	Delete the cursor at the end of the line
P, p	Paste at the current cursor row or line

　　⑤ Replace and Undo commands

Command	Role
R	Replaces the character at which the cursor is located
R	Start replacing characters from the cursor until you press ESC to end
U	Cancel the previous action
Ctrl+r	Redo Operation

⑥ Search and search Replace command

Command	Role
/string ? string	Search forward (or backward) the specified string,/forward,? Represents a backward lookup. Ignore case: Set/ic
N	Searches for the next occurrence of the specified string
:%s/old/new/g	Full text replaces the specified string,s preceded by%, representing the full-text range, and g for global, if not plus% for the current row.
: n1,n2s/old/new/g	s preceded by a number indicating that the specified string is substituted within the specified range of rows

⑦ Save and Exit commands

Command	Role
: W	Save only, do not exit
: w New_filename	Save as specified file
: Wq	Save changes and exit
Zz	Shortcut keys (shift+z+z), save changes and exit
: q!	Do not save changes to exit
: wq!	forcibly save the changes and exit (the file owner and root can be used, for the file only read-only permission !) ）

2. Vim Usage Tips

(1) execute command in last line mode : Format,! Command

For example,:!ls-l/etc,:!date

(2) import command execution result

① Import Command Execution result: #r! order, eg. #r!ll/tmp

② import file to Cursor location: #r file name, eg. #r/etc/issue

(3) Defining shortcut keys:map shortcut Trigger command

① Comment Line:: Map ^p i#<esc>//definition ctrl+p for I means the cursor goes back to the beginning of the row and into insert mode, then enter #, and finally press ESC to return to the command mode (note that the ^p in the input should be pressed ctrl+v+p).

② Delete Note:: Map ^b 0x//ctrl+b,0 indicates that the cursor is positioned to the beginning of the line, but still in command mode, x indicates the deletion of the character under the cursor.

③ Insert Email Address:: Map ^m [email protected]<ESC>//ctrl+m, where I means go into insert mode,<esc> return to command mode.

(4) Continuous line annotation

① comment Consecutive lines:: n1,n2s/^/#/g//where ^ denotes a null character at the beginning of the line, replaced by #

② Delete consecutive lines comment:: n1,n2s/^#//g//Replace # with empty

③ to//To NOTE:: n1,n2s/^/\/\//g//where \ means escape , that is, to//. Originally, the empty character at the beginning of the line is converted to//, which acts as a comment.

(5) Replacement: : AB mymail [email protected] //ab command, replace MyMail with [email protected]

4th Chapter Text Editor vim