Linux

Just into a company, suddenly a direct throw to the public network development test machine, there is output traffic explosion 300m+, directly lead to server load high, IDC cacti monitoring reported traffic anomaly problem, the following is the

For Linux commands here is a simple explanation (simple description Oh!!) ） For Linux and Windows Basic operation is to switch directories, because only to enter the directory, you can see the content (for Linux This is not very accurate must

Objective: In general operations work often encounter such a scenario, the server's IO load is very high (util in iostat), but unable to quickly locate the IO load source process and source files resulting in the inability to make the

Message Queuing is used to implement the FIFO of the message, but it is faster to use shared memory for the FIFO of the message;We first complete the C language version of Shmfifo (based on the procedure call), and then implement the C + + version

/etc/resolv.confThe file is a configuration file for DNS domain name resolution, and its format is simple, with each line beginning with a keyword followed by configuration parameters.There are four key words in resolv.conf, namely:NameServer

　　The LS command is the most commonly used command under Linux. ls command is the abbreviation of the list, the lack of saving LS is used to print out the current directory of the list, if LS specifies a different directory, then display the list of

0. PrefaceFrom the beginning of learning C language began to contact Makefile, consulted a lot of makefile information but the total feeling did not really master makefile. Assuming that you write a makefile, you always think it's very exhausting.So

Account and Rights Management Requirements: One, create the user directory: Create Directories/tech/benet and/TECH/ACCP, respectively, for hosting files for user accounts in each project group. Steps:: 650) this.width=650; "Style="

Beijing Institute of Electronic Technology (BESTI)Real Inspection report Course: Basic experiment of information security system design class: 1353 Name: Wei Hao Wang may also study number: 20135303 20135326Score: Instructor: Lou Jia Peng

http://nlslzf.iteye.com/blog/812995First, software preparation1, apache-maven-3.0-bin.tar.gz:http://www.apache.org/dyn/closer.cgi/maven/binaries/apache-maven-3.0-bin.tar.gz2,

Misunderstanding#define _xopen_sourceIt's definitely not a simple macro definition.It is an integral part of making the program conform to the system environmentConceptThe functions implemented by GLIBC in all or part of the specification are:1.ISO

1. Write the configuration file as follows (take the Amadeus system as an example):Write the configuration file, put under the/etc/logrotate.d/xxxx, where xxxx is the name you take, without a suffix. For example, this file in the Amadeus system

Recently, I have seen a simple implementation of the IO event detection API Select/poll/epoll in Linux linux-3.10.25 kernel. Make some records here.The basic principle is the same, the process is as follows Call the FD corresponding struct

QT under the static compile Qt, according to my experience, if according to the kind of windows under the Official SDK installed directly after the file to compile is not feasible, need to download QT source package directly, At present, the source

The chmod command is used to change access rights for Linux system files or directories. Use it to control access to files or directories. There are two ways to use this command. One is a text-setting method that contains letters and operator

Apple's logo is a bite of an apple, and Microsoft's logo is a window (at least initially). Why is the mascot of Linux a penguin? Why is it called Tux? Why is it just a mascot, not a logo?Tux was written by Larry Ewing in 1996, on the advice of Linus

Install the desktop environment using YUM in CentOS CentOS is very common as a server operating system, but it is rarely used as a desktop environment because it requires stability and is not very fashionable updates. Generally, you do not need to

Change Hostname in CentOS 7 After upgrading the VPS system to CentOS 7, I tried to modify/etc/sysconfig/network to modify the hostname, but it was useless. the method for modifying the Hostname of CentOS 7 is different from that of the previous

How to switch from NetworkManager to systemd-network on Linux In the Linux World, the adoption of systemd has been a subject of heated debate, and the war between its supporters and opponents is still burning. By now, most mainstream Linux

Linux crontab & run once every 10 secondsIn linux, you should first enter crontab-e, then there will be a vi editing interface, and then enter 0 3 ** 1/clearigame2 content to it: wq is saved and exited. In LINUX, The cron Daemon Processes tasks in a