"Linux basic knowledge, common commands, serial communication and common system Introduction" __linux

1. Basic knowledge of Linux

Linux version of I386/I686/X86-64/PCC, etc... The difference

The understanding of the Inode of Linux (the interview, once asked, is to find space, but still cannot create new directories and files, a big reason is that the inode is already full)

How to redirect the output path of the keepalived log

Why command not found appears when you add sudo before executing some commands in Linux

Three ways to configure Linux environment variables--/etc/profile,~/.bashrc,shell

In the Linux shell variable setting, "$?" Represents the

2, Linux common commands

Groupadd command Detailed (example)

The Useradd command usage method of Linux command detailed explanation

The Useradd command usage method of Linux command detailed explanation

CHGRP----Modify the group to which the file or directory belongs

Linux command: Time

CHATTR instructions are used: (interview, has been asked, under what circumstances, even the root user, RM-RF command can not delete a file, this is said to be chattr, the exact point is its +i option)

Linux Memory Cleanup/release command

Useradd Command Detailed

Gunzip and unzip extract files to the specified directory

Tips for solutions to Sudo:cd:command not found

3, Linux serial communication

Linux Serial read/write (i)

Detailed Linux serial communication development

Linux Serial Port programming detailed

Linux Serial port programming

A little experience about the serial communication under Linux

Ubuntu View and configure the serial port

4. Linux common system ①centos A, environmental deployment

centos7.0 Installation Tutorial

B, Basic knowledge

Replace the CentOS Yum source with the domestic Aliyun source

CentOS6.6 network card static IP settings

C, frequently asked questions

How to Fix GNOME License not accepted Issue on CentOS 7

SSH login Very slow problem solving method

②ubuntu

How to configure fixed IP under Ubuntu14.04

Common VI Editor Command line

The use of the input method under Ubuntu