Linux

From: http://blog.csdn.net/ethanzhao/article/details/4406017 Basic Format:* *** CommandHour, day, month, and week commands The 1st column indicates minute 1 ~ 59. Each minute is represented by * or */1.The first column indicates the hour 1 ~ 23 (

In Linux, how does one view that Apache uses httpd. conf? Step 1: Find the Apache startup command: [Root @ wapbj01 ~] # Ps-Ef | grep httpdRoot 10575 1 0 19: 45? 00:00:03/usr/sbin/httpd-K startMyuser 15356 2982 0 jan19? 00:00:00/home/Apache/bin/

Download the corresponding CPU version:Http://nmon.sourceforge.net/pmwiki.php? N = site. Download Wget http://sourceforge.net/projects/nmon/files/download/nmon_x86_12a.zip/download Unzip nmon_x86_12a.zip Archive: nmon_x86_12a.zip Inflating: nmon_x86_

The most complete sysctl. conf optimization solution in China There are various versions of the sysctl. conf optimization solution on the Internet, most of which are copied and copied, making new users confused. In order to solve this problem, I

O: compiled target file-X/s3fm 'sh] x0A:Static library, in fact, is to pack a number of O filesKZ3nouvPr0So: dynamic link library (shared library) China's top electronic development network-the most professional electricitySub-Forum, blog of the

Dd is used to convert and copy objects. We can use it to split objects. The related options are as follows: If = filename: Input File Name Of = finename: output file name BS = Bytes: the number of bytes read/write at a time. The default value is 512

When a Linux system encounters a problem, we not only need to view the system log information, but also need to use a large number of performance monitoring tools to determine which part (memory, CPU, hard disk ......) An error occurred. In Linux,

The log file system can ensure the integrity of the overall data in the case of power failure or other system faults. Linux is one of the most supported operating systems, this article focuses on the common log file systems in Linux: ext3, reiserfs,

1. What is a file system ); A directory structure contained within a disk drive or disk area. the total available disk space can be composed of one or more filesystems. A filesystem must be mounted before it can be accessed. to mount a filesystem,

To those who want to become a Linux master Linux system learning methodology First of all, I would like to quote a sentence that someone else said: Unless you have been living in a cave for the past decade, you must have heard of Linux.Yes. Now I

I. New and Old Version schedulers in LinuxComparison Before kernel version 2.6, the scheduler had obvious restrictions when many tasks were active. This is because the scheduler uses an algorithm with the complexity of O (n. In this scheduler, the

I'm so happy today. I have to post more messages to celebrate. Haha 1. Fusion Overview Fusion is an IPC-(Inter Process Communication) kernel module. The philosophy of fusion is that processes can use only the primivites provided by fusion to "speak"

On a 32-bit processor platform supporting MMU, the addresses of physical and virtual buckets in Linux systems are from 0x00000000 to 0 xffffffff, 4 GB in total, however, the physical storage space is completely different from the virtual storage

For the last three days, there has been an article titled "Why Linux is not ready for desktop. Most of the time, these articles stem from lack Understanding and acceptance of open-source systems. I will fight back against some common ideas against

For example, to change the zhangsan in all the files under the directory/modules to Lisi, do the following: Sed-I "s/zhangsan/Lisi/g" 'grep zhangsan-RL/Les' Explanations: -I indicates inplace edit, modifying files in place-R indicates searching for

Management of I/O Ports and I/O memory in Linux Port is the address of the register that can be directly accessed by the CPU in the interface circuit. Almost every type of peripherals is performed by reading and writing registers on the device. The

Http://edu.codepub.com/2009/0704/8440.php     The multi-threaded program development on the Linux platform is slightly different from the multi-threaded APIs on other platforms (such as Windows. Not paying attention to some development traps on

  In ARM-based embedded system development, there are two GCC tool chains that often use cross-Compilation:The main difference between ARM-Linux-* and arm-elf-* is that they use different C-library files. Arm-Linux-* useWhile arm-elf-* generally

DIY Linux mobile phones. Significant breakthroughs in xiaxin e600 and Philips 968 Grass papaya updated on afternoon I. Sequencing Xia xine600 and Philips 968 finally made a major breakthrough on the same day! You can execute a custom shell.Script!

I. Overview Developing Drivers Based on subsystems is a common practice in Linux kernel. I have previously written about driver development based on the I2C subsystem. This article introduces another common bus SPI development method. The