printf usage

#include #includestring.h>#include#include#include#includeinch.h>#include#if0#defineUdp#else#defineTcp#endifintsockfd;Char* IP ="10.8.2.60";//char *ip = "127.0.0.1";#ifdef UDP ShortPORT =1025;#endif#ifdef TCP ShortPORT

from:http://blog.csdn.net/jasonliuvip/article/details/22600569Linux Network Programming IX: Splice function, efficient 0 copiesRecently looking at "Linux High Performance Server Programming", here to do a diary to motivate themselves, while sharing

reproduced in: 1852321I have always felt that binary file read and write is a very easy thing, so has not cared about, recently in writing an HTTP client, the implementation of the file download, found that there is always a problem, later found to

Environment: Linuxlanguage: C + +Communication Mode: TCP　　The following uses the TCP protocol to write a simple server, the client, where the server side has been listening to the local port number No. 6666. If a connection request is received, the

Gethostbyname.c1#include 2#include 3#include 4#include 5#include 6#include 7 8 intMainintargcChar*argv[])9 {Ten inti; One structhostent*host; A if(ARGC! =2) - { -printf"Usage:%s \n", argv[0]); theExit1); - } - -Host =

GCC compiles three languages: C, C + +, and object C (an object-oriented extension of the C language). Use the GCC command to compile and connect both C and C + + source programs at the same time. #DEMO #: HELLO.C If you have two or a few C source

 This paper gives a very practical C-language implementation of the server and client TCP communication for a small example. Specific implementation is very simple, but usually write similar procedures, the specific steps often forget, but also

Linux under the network programming implementation udp[turn] First, the introductionUDP is a kind of transport layer protocol in TCP/IP protocol, this paper introduces the method of programming Client/server model based on UDP protocol under Linux,

I. Preamble Service programs under Windows follow the interface standards of the Service Control Manager (SCM), which run automatically when they log on to the system, and even execute normally without a user logging on to the system, similar to a

The paper wants to discuss the load balance, which is the load balance between various worker threads (processes) within a multithreaded (multi-process) server program.Consider a common server model: A receiver thread is responsible for receiving

Deputy Hunter is the Sun wind comrade hard work results, no solar wind more than a year of continuous cultivation, there is no wonderful agent Hunter today, so let us at the beginning of the article on the Sun Wind Comrade Express sincere greetings!

First, the system environment Linux os kernel2.4.2, installing gsoap2.6 to directory/usr/local/gsoap Ii. examples of the use of gSOAP The following is a simple example that implements the WebService of an addition operation, which is the client

MySQL Multi-instanceMySQL multi-instance, simple to understand is on a server, the MySQL service to open a number of different ports (such as 3306, 3307,3308), running multiple service processes. These MySQL service processes use different sockets

1. Install MySQL# useradd-s/sbin/nologin-m MySQL# TAR-XVF Mysql-5.6.41-linux-glibc2.12-x86_64.tar.gz-c/usr/local# mv Mysql-5.6.41-linux-glibc2.12-x86_64 MySQL# Chown-r Mysql:mysql/usr/local/mysql2. Configure the multi-instance profile directory#

What is a multi-instanceTo put it simply, MySQL multi-instance is to open multiple different service ports on a single server (for example 3306/3307 : running multiple MySQL service processes concurrently, these service processes provide services

-----------MySQL Multi-instance configuration file[[Email protected]/]# cat/data/3307/my.cnf[Client]Port = 3307 # Port numberSocket =/data/3307/mysql.sock[MySQL]No-auto-rehash[Mysqld]user = MySQL # memberPort = 3307 # Port numberSocket =/data/3307/

MySQL Master-Slave constructionMain Library construction See blog:http://zhanghongxin.blog.51cto.com/11255031/1847059when the main library is built:1. Package Backup Data(1) Read-only to Database lock table>flush table with read lock;(2) The time

Manually deleting an Oracle database user often occurs when the session process is still in use causing the deletion to fail. It is inconvenient to query the session and delete the session to successfully delete the database user.Applicable

First, MySQL multi-instance IntroductionOpen several different service ports (3306,33307,3308) on one server, run multiple MySQL service processes, share a set of MySQL installers, multi-instance MySQL is logically independent1, multi-instance

1. #initport =3306mysql_user= "root" mysql_pwd= "cancer" cmdpath= "/application/ Mysql/bin "mysql_sock="/data/${port}/mysql.sock "#startup functionfunction_start_mysql () {if [!-e" $mysql _sock "]; Then printf "Starting mysql...\n"/bin/sh ${cmdpath}/