The difference between chown and chmod: One, chown File/directory permissio

/etc/profile: This file sets the environment information for each user of the system.

         VI File Editing There are three modes, Command mode is used to enter vi co

A customer is concerned about the recovery of logical errors. The solution we recomme

         The companys network environment is a bit complicated, and the damn secure p

On Linux systems, there are a number of commands that can be used to query the hardwa

         Greg Kroah-Hartman today announced the seventh release of Linux Kernel 3.15,

Searched on the Internet for a long time, only slowly understand the method of retain

         A few days ago I was discussing the speed of linux looking for files with ev

Thread pool: Simply put, a thread pool is a batch of threads created in advance to ha

         Here, the redirection can be understood as follows: The original output met

Help command Man + command Command + -help whatis + command 1 + command 2: can easil

         User and Group Commands Adding a new user: Useradd Example: useradd + userna

After the Linux virtual machine copy is started, use the ifconfig command to display:

         When I encounter a mysql card and then want to know why I found it, I usuall

in Linux Shell The IF/THEN structure determines whether the return value of a piece

        If you want to change the host name to linux, the two methods: 1. # hostname

Unix/Linux Software Installation First of all, we understand that on Unix like machin

         [i]: In the command line mode, press the [i] key to enter the insert mode, a

The first big question: Mainly use some basic commands: cat, cp, mkdir, mv… Cr

         Well, I’ve been internships in Netease games lately, so it seems that I have

Shutdown and restart system under Linux have shutdown, halt, reboot, init, for them t

         1. Introduction to file permissions There are 9 linux file permissions, thr

statement The author recently discovered that many articles of the authors personal w

         First borrow a picture online, I feel this is clear: Linux system virtual

First, the interrupt system hardware architecture: arm cortex-A9, the interrupt cont

         1.1 Kernel address space (linear space) distribution (1) Direct mapping ar

struct file, defined in <linux/fs.h>, is the second most important data structu

         Installation Method 1: To install via apt-get install, you can do the follo

1. u-boot program entry address To understand the programs entry address, naturally

         malloc/free implementation Chunk struct malloc_chunk { size_t prev_size; siz

X86 platform LINUX process memory layout is as follows: The meaning of the above par

su command and the su-command is: su just switches the root identity, but the shell e

         Author: Zhangchang Chang In some cases, often you need to launch multiple

linux hard disk partition format and mount 1, hard disk interface type Hard disk in

         1. Time of linux fileThe file time under linux mainly has the following thre

Command: tar operation on compressed file 1. -c: create compressed file 2. -x: decom

         I believe that you love programming, you are obsessed with technology, you h

Ubuntu is a good Linux operating system, but for newcomers who just installed it, how

         rman backup script #! /bin/bash su - oracle <<! rman target /<<E