Linux

The main study today is the strengthening of the 5th day.such as multi-process server, peer-to-peer application of the chat program. Parent process Child processes send messages to each other. Wait a minute.Stream protocol-Sticky packGenerally, the

The Linux file comparison directive has two, Comm and diff, where Comm requires a sorted file. Diff does not have this requirement, the output of the diff is mainly used to indicate how a file can be modified to get the file two. Comm The

Linux Common commandsCommand:CopyCP hello.c/Copy from home directory to root directoryCp–r Test/Copy the Test folder from the home directory to the root directoryMV Long/ mobileChange file name mv hello.c hello1.cDelete File rm hello.cDelete

The less tool is also a tool for paging through files or other output, which is a very powerful tool for Linux to view the contents of a file. The usage of less is more resilient than more. In more, we have no way to turn front, can only look back,

command format and directory processing command lsCommand formatCommand format: command [-options] [parameters]Example: ls-la/etcDescription: 1) Individual command use does not follow this format2) When there are multiple options, it can be written

1. Enter/ETC/INIT.D2, the new file tomcat, the contents are as follows:#!/bin/sh# chkconfig:345 99 10# Description:auto-starts Tomcat#/etc/init.d/tomcat# Tomcat Auto-start# Source function library.#. /etc/init.d/functions# source Networking

ps-ef|grep local=no|grep-v grep|cut-c 9-15|xargs kill-9 Pipe Symbol "|" Used to separate two commands, the output from the left command of the pipe character is entered as the command to the right of the pipe. Let's talk about the connection with

Process: is an abstract concept in the operating system that indicates that a running program process has multiple attribute parameters: PID, PPID, UID, GID, and so on: Manually create aBackground Program, and throughKillKill it, the foreground

> Correct result redirection 2> Error result redirection &> Correct and Error Redirect all >> Additional, other > The standard output is actually a display, such as when we

1 Upload the JDK installation package jdk-7u7-linux-x64.rpm using the SFTP tool . 2 switch to root user, install jdk_1.7.0_67 # Su–root# RPM–IVH jdk-7u7-linux-x64.rpm3 Configure environment variables, modify the/etc/profile file, add

Trace analysis of the boot process of the Linux kernelWriter: Yang Guangxu No.: 20135233(* Original works reproduced please specify the source *)(Study course: "Linux kernel Analysis" MOOC course

Wrap up the Linux array today, and then basically get it done today.This will not be summed up for some time.Because the next step is to look at the awk array.And then we'll start learning something basic, like all kinds of file systems.or load

PHPclassgetmacaddr{var$return _array = Array ();//returns an array of strings with MAC addresses var$mac _addr; function getmacaddr ($os _type) {Switch(Strtolower ($os _type)) { Case "Linux": $ This-Forlinux ();

Linux (5) gcc and linuxgcc GCC = gnu c Compiler. The following describes how to use it.   1 pre-processing) $ Gcc-E-o hello. I hello. c -E: stops after preprocessing.   2 compile (compiling) $ Gcc-S-o hello. s hello. I -S: stops compilation.

Linux CentOS-7.0 environment construction, linuxcentos-7.0This article is a graphic tutorial for beginners to install centos-7.I. Preface Recently, to build a lab architecture, you need to learn about docker. Docker is completely dependent on the

Linux route, linuxroute I. Introduction The route command in Linux is used to display and operate the IP route table (show/manipulate the IP routing table ). To achieve communication between two different subnets, you need a router that connects

[Switch] Centos configuration yum source, centosyum Source Reprinted from: http://blog.chinaunix.net/uid-23683795-id-3477603.html Netease (163) yum source is one of the best yum sources in China. Both the speed and software version are very good.

Role of asmlinkage This article Reprinted from: http://blog.chinaunix.net/uid-24945116-id-83893.html Learning!   Asmlinkage is a macro used to keep parameters in the stack. BecauseFrom assembly language to C language code ParametersIs passed through

Modify the default Host Name of CentOS6.5 (root operation) After the official CentOS6.5 image is installed, the default host name is localhost, which is inconvenient to manage and needs to be modified according to the actual situation. Here I'm

Linux development Summary 1. Configuration File You can see in out \ target \ product \ msm8909 \ obj \ KERNEL_OBJ \. config   # Operation is not set # CONFIG_MTD_UBI is not setCONFIG_DTC = yCONFIG_OF = y # Device Tree and Open Firmware