Linux

Struct timezone TZ; struct timeval sthandlehistoryrecordfactlystarttime; struct timeval interval; gettimeofday (& today, & Tz); dosomething (); // gettimeofday (& today, & Tz); int ihandlehistoryrecordfactlytime = (sthandlehistoryrecordfactlyendtime.

By two ArticleThis series of articles mainly describes how to apply smart devices in Embedded Linux Program. Part 1 describes the current situation of smart device development in Embedded Linux and the concepts of QT and WebKit. Taking

Solution to Linux Network Problems 1. check/etc/sysconfig/network-script/to check whether eth0 and eth1 are correctly configured. view/etc/modual. check whether the configuration module of conf is correct. 3. restart and run the/etc/init command.

# Include # include # include # include # include void msg_stat (INT, struct msqid_ds); int main () {int gflags, sflags, rflags; key_t key; int msgid; int reval; struct msgsbuf {int mtype; char mtext [1];} msg_sbuf; struct msgmbuf {int mtype;

WC commands in Linux are statistics.CodeThe usage of the number of rows is as follows: Usage: WC [Option]... [file]...Or: WC [Option]... -- files0-From= FOutput the number of lines, word counts, and number of cells of each specified file.If there

Application Programming Technology for shared memory in UNIX systemsIndustrial and Commercial Bank of China Hui 'an County Branch (362100) Zhuang Wenxiang  Shared Memory (SHM) refers to the memory created by a

Reprinted from: http://blog.csdn.net/lovingprince/article/details/5419032 CAT/proc/Cpuinfo Or Vim/proc/Cpuinfo View System Information CAT/proc/Cpuinfo-CPU (I. e. Vendor, MHz, flags like MMX) CAT/proc/interrupts-interrupt

To support over 500 k users, you * need * -A 64 bits Hardware/kernel (amd64, opterons)-At least 8 GB of RAM-A recent Linux kernel (2.6.x) About tuning, I prefer to not fully disclose them because servers are targets of specified attacks, so it's

Understanding Linux system load Original article: Understanding Linux CPU loadTranslation: Ruan Yifeng 1. View System LoadIf your computer is slow, you may want to check whether it is too heavy.In Linux, we generally use the uptime command to

How to Implement Version Control for shared libraries in Linux Linux systems also face the same issues as windows, and how to control multiple versions of dynamic libraries. Windows was not well handled before. Therefore, we have a special term to

We have been using Si + virtual machines for development. The best way to achieve this is that Si uses a Huawei configuration and Virtual Machine sharing. When the machine is changed, it will cause a lot of trouble. In addition to Si, you can

One sentence:I am not studying technology, but pursuing faith. In this world, there are such a group of people: their minds are basically in the Idle State. To avoid idle valuable talents, they are constantly tossing, tossing, tossing ...... We

This document uses the default configuration of ubuntu 12.04 lts desktop (x64) as an example (the memory of the machine is 4 GB). Read this document first.TCP connection status and closing method and their impact on server and client,TCP Parameter

We can see that someone adds a 'or any halfwidth symbol to the front of a Chinese character string to let the bug remove it, but this is too troublesome. Finally, we can find a function to simulate the fgetcsv function. CopyCode The Code is as

Truecrypt was initially developed for the Windows platform and later supported the Linux and Mac OS X platforms. However, truecrypt focuses on the Windows platform, linux and Mac OS X do not support the system encryption function and AESAlgorithmX86

Concept of Network File System (NFS)Network File System (NFS) is a way to share files between machines on the network, just as files are located on the customer's local hard drive. Red Hat Linux can be either an NFS server or an NFS client, which

Today, I took a look at the "GCC usage and Development" section in "Linux System Application and Development tutorial". I have been familiar with Linux for a short time, but there are still few things that really understand Linux, now let's play

Socket programming is very familiar to everyone. I will not be arrogant here. Directly go to the topic. TheProgramThere are two parts: server and client (everyone knows ). The server uses the Windows platform, and the Linux platform is of course the

Basic Linux thread usage: Basic usage of POSIX thread I want to use the thread, but I have never understood the thread very well. I have read some documents and made two examples and summarized them. If not, please correct me. 1. Basic

In 20008, clucene was installed on the xcat1 Computer Cluster Management node. First from http://sourceforge.net/project/showfiles.php? Group_id = 80013 download clucene-core-0.9.20stable. The preceding section contains the contribs and core