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pipe() function in linux programming

A pipe is a mechanism that connects the standard input and standard output between two processes, thereby providing a method for communication between multiple processes. When a process creates a pipe, it needs to provide two file descriptors each time. to operate the pipeline. One of them writes to the pipe and the other reads from the pipe. The reading and writing of pipes are consistent with the general IO system functions. Use the write() function to write data and read() to read data.

Dec 13, 2016 am 11:31 AM

linux pipe

Detailed explanation of Websocket protocol and simple example code

This article mainly introduces the relevant information of the Websocket protocol in detail and simple example code. Here is a detailed introduction to the websocket protocol and a simple example code. Friends in need can refer to it.

Dec 13, 2016 am 10:59 AM

websocket

linux yum command

yum (Yellow dog Updater, Modified) is a Shell front-end package manager in Fedora, RedHat and SUSE. Based on RPM package management, it can automatically download and install RPM packages from designated servers, automatically handle dependencies, and install all dependent software packages at once, without the need to download and install them again and again. yum provides commands to find, install, and delete a certain, a group, or even all software packages, and the commands are concise and easy to remember.

Dec 13, 2016 am 10:53 AM

Configuration and use of CentOS yum source

yum, the abbreviation of Yellow dog Updater, Modified, is a software package manager developed by Duke University to improve the installability of RPM software packages. It was originally developed by Terra Soft, the developer of the yellow dog distribution, and was written in python. At that time, it was also called yup (yellow dog updater). It was later improved by the Linux@Duke development team of Duke University, hence the name. The purpose of yum is to automatically upgrade, install/remove rpm packages, collect information about rpm packages, check dependencies and automatically prompt users to solve them. The key to yum is to have reliable r

Dec 13, 2016 am 10:50 AM

yum command

The yum command is an rpm-based software package manager in Fedora, RedHat and SUSE. It allows system administrators to interactively and automatically manage RPM packages in a more detailed manner. It can automatically download and install RPM packages from a designated server. It can automatically Handle dependencies and install all dependent software packages at once, eliminating the need to download and install them again and again.

Dec 13, 2016 am 10:43 AM

In-depth analysis based on Discuz security.inc.php code

This article is a detailed analysis and introduction to the code of Discuz security.inc.php. Friends in need can refer to it.

Dec 13, 2016 am 10:42 AM

Zend Framework database operation method example summary

This article mainly introduces the Zend Framework database operation method, and summarizes and analyzes the Zend Framework database operation-related function usage skills and precautions in the form of examples. Friends in need can refer to the following

Dec 13, 2016 am 10:39 AM

framework

Detailed explanation of linux yum command

yum (full name Yellow dog Updater, Modified) is a Shell front-end package manager in Fedora, RedHat and SUSE. Based on RPM package management, it can automatically download and install RPM packages from designated servers, automatically handle dependencies, and install all dependent software packages at once, without the need to download and install them again and again. yum provides commands to find, install, and delete a certain, a group, or even all software packages, and the commands are concise and easy to remember.

Dec 13, 2016 am 10:33 AM

Detailed explanation of SOCKET programming in Linux

Dec 13, 2016 am 10:30 AM

Detailed explanation of Socket

We are well aware of the value of information exchange, so how do processes in the network communicate? For example, when we open the browser to browse the web every day, how does the browser process communicate with the web server? When you use QQ to chat, how does the QQ process communicate with the server or the QQ process where your friends are? Do all these rely on sockets? So what is a socket? What are the types of sockets? There are also basic functions of socket, which are what this article wants to introduce. The main contents of this article are as follows:

Dec 13, 2016 am 10:17 AM

Socket

Introduction to socket communication

Dec 13, 2016 am 10:09 AM

socket

Detailed tutorial on linux multi-thread programming (threads implement communication code through semaphores)

This article mainly introduces a detailed tutorial on Linux multi-thread programming and provides code for threads to communicate through semaphores. Please refer to it for reference.

Dec 13, 2016 am 09:57 AM

The difference between TCP/IP, HTTP and Socket

The network is divided from bottom to top into the physical layer, data link layer, network layer, transport layer, session layer, presentation layer and application layer. Through preliminary understanding, I know that the IP protocol corresponds to the network layer, the TCP protocol corresponds to the transport layer, and the HTTP protocol corresponds to the application layer. The three are essentially incomparable. Socket is the encapsulation and encapsulation of the TCP/IP protocol. Application (programmer level). It can also be said that TPC/IP protocol is a transport layer protocol, which mainly solves how to transmit data in the network, while HTTP is an application layer protocol, which mainly solves how to package data.

Dec 13, 2016 am 09:54 AM

Simple understanding of Sockets

To understand sockets, you must first familiarize yourself with the TCP/IP protocol family. TCP/IP (Transmission Control Protocol/Internet Protocol) is the Transmission Control Protocol/Internet Protocol, which defines how hosts connect to the Internet and how data is transmitted between them. Standard, literally speaking, TCP/IP is the collective name of TCP and IP protocols, but in fact, TCP/IP protocol refers to the entire TCP/IP protocol family of the Internet. Different from the seven layers of the ISO model, the TCP/IP protocol reference model classifies all TCP/IP series protocols into four abstraction layers

Dec 13, 2016 am 09:53 AM

socket