Fun with Ubuntu (Linux Editor Vim Basics)

Fun with Ubuntu (used by Vim in the Linux editor)

Author CodeAllen , please indicate the source

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Getting started with vim

1. Installation

sudo apt install - y vim 

Second, open the file

open a file

sudo vim demo.cpp

Directly locate to the line, for example, line 25

sudo vim +25 demo.cpp 

Simultaneously open multiple files demo.cpp and test.cpp
Ctrl + W can switch the editing window

sudo vim -O demo.cpp test.cpp

Three, configure Vim

The default vim is just a simple editor, it is more convenient to configure some development functions.
Its configuration file location is

vi /etc/vim/vimrc

Add the following configuration (you can add it yourself)

: set nu     #显示行号
：set ai     #自动缩进
：syntax on  #语法高亮

Fourth, edit the document

vim editor is mainly three modes

• Command mode-"In this mode, the input is considered to be a control command
• Edit mode--》 a / i / o any key can switch to edit mode
• EX mode-"When exiting, Esc key, q to exit, wq to save and exit, q! To exit without saving

5. Command execution

Linux can be executed in the edit command
to use Esc to switch to command mode, a colon Ex mode, can then enter the command
Example child:

:! g++ -o demo demo.cpp

Six, shortcut keys

sudo vim /etc/vim/vimrc

Define shortcut keys, after saving, click vim directly in vim command mode to run

noremap <F6> :set nu
noremap <F7> :set ai
noremap <F8> :syntax on

Seven, some efficient configuration

filetype on            #启动文件类型侦测
set encoding=cp936     #指定当前字符编码为Windows简体中文
set tabstop=4          #设置tab键为4个空格
set mouse=a            #在终端中使用鼠标
set ignorecase         #查找时忽略大小写