Linux

The comparison between select and Epoll is not to say much. The ACE uses Select to implement reactor under Linux by default. How to let ace use Epoll under Linux.1. Add a compiler macro that tells the ACE not to use the default select, but to use

Reprint please indicate the source: The Curtain Roll westerly column (Http://blog.csdn.net/ljxfblog)The Zlib library is a powerful, general-purpose, open-source compression library that is widely used and can be easily compiled or compiled into

1. Command functionCP: Copy a file or directory, the file exists will ask whether to overwrite2. Command formatCP [Options] file or directory3. Command parameters-I: asking when overwriting-r: Copy directory, recursive replication-F: Forced

1. The principle of file compression: At present, the computer system is used bytes units to measure, but, in fact, the smallest unit of measurement of computers should be bits, in addition, we also know 1byte=8bits. That is, each byte will have 8

Introduction to Linux Abstract network devicesSimilar to disk devices, Linux users want to use the network function, can not be done by direct operation of hardware, but need to directly or indirectly operate a Linux for our abstraction of the

4 ways to accelerate network applications Using the Sockets API, we can develop client and server applications that can communicate on the local network or on a global scale over the Internet. As with other APIs, you can use the Sockets API in a

---restore content starts---C library function file operation is independent of the specific system platform, the portability is good.Library functions-Create and openFile*fopen (const char*filename,const Char*mode)Mode: Open modesCommon open Mode:R,

Recently, when using SSH to connect to the remote host, I found that after the input SSH command to wait a long time to enter the password prompt, and on the other machine basically is immediately can display the prompt to enter the password. It

Transferred from: http://www.360doc.com/content/13/0117/12/5073814_260691714.shtmlSynchronous and asynchronous: related to the notification mechanism of a message . Essential differences Practical examples

localhost=${host:-"localhost"}The host variable is not set or empty, and the host takes the value after "-"; otherwise host= $hosthost=${host-"localhost"}The host variable is not set, and the host takes the value after "-", otherwise if the variable

One, the kernel version of LinuxThe Linux kernel numbers are numbered in the following format: The major version number. This version number. Main patch number. Minor Patch number Example: 2.6.26.3 The first number "2" is the major version number,

If you look at the Linux manual (for example, execute: Man Open), you will find that there are expressions in the document: Read (2), write (2), Lseek (2), Fcntl (2), and so on, what does the numeric expression in parentheses mean?You can get the

A Brief introductionThe Nmon tool helps to display all of the important performance optimization information on one screen and dynamically updates it. This efficient tool can work on any dumb screen, Telnet session, or even dial-up lines. In

Article Slyar article source: Slyar Home (www.slyar.com) Reprint Please specify, thank you for your cooperation. The Linux command line permanently modifies the IP address, gateway, and DNS. 1. Modify the IP address First check your host card

Recently newly configured a "Faith bonus" experiment Machine (AMD FX-8350, Gigabyte 990xa-ud3, Sapphire R7 260X), will be installed Debian Gnu/linux the problems encountered in the following summary: Nic not working properlyWorkaround: Turn

#include //standard input and output header file#include //function declarations and structure definitions related to sockets#include inch.h>//some struct declarations, macro definitions#include //some function declarations#include //Viewing error

Linux under the multi-threaded program occurs when Coredump, withGdb/path/to/program/file CoreYou can see all the threads[Email protected]:~/test/thread# gdb a.out CoreGNU gdb (GDB) 7.6.1Copyright (C) Free Software Foundation, Inc.License gplv3+:

Solution to the linux Argument list too long error, argumentlong Solution to the linux Argument list too long error Delete all files in the/tmp directory today. The number of files is large. Ls-lt/tmp | wc-l385412 When rm * is used, the

CentOS Study Notes-system services (daemons), centosdaemonsSystem Service (daemons) For some functions, the system must provide some services (whether the system itself or the network). This service is called a service. However, the provision of

Linux applications: Vim quick operations and vim quick operations 1. Delete characters X: Delete characters under the cursor Dd: deletes a whole line, including line breaks. J: Delete the line break of the current row. It can be executed anywhere