Linux

CD: English name change directory, changing the meaning of your directory. 1. Command format: CD [Directory name] 2. Simplify the operation: CD ~ Enter the home directory of the current user the CD is the same as the CD ~ command, which is

There's a difference. The /lib gives a library file of the root and the kernel required so or a, and/usr/lib is available to ordinary users. There are two modes of Linux program, which you should know, is User mode and kernel mode, and this is also

The waiting queue of Linux kernel is based on the double cyclic list, which is closely combined with the process scheduling mechanism, and can be used to realize the core asynchronous event notification mechanism. In this list, there are two types

#include #include #include #include #include #include #include #include #ifdef SOLARIS#include #endif #define Maxinterfaces Main (argc, argv)register int argc;Register Char *argv[];{Register int FD, intrface, retn = 0;struct Ifreq

Some time ago read the "deep understanding of the Linux kernel" to the memory management part of it spent a lot of time, but there are still a lot of questions that are not clear and have recently taken some time to review, documenting your own

Linux kernel focuses on the programming wisdom of the world's top programmers, and remembers the four main functions of the operating system: The process scheduling memory management device-driven network. Engaged in the embedded software

ARM MMU page table frame First on the arm MMU of the page table structure of the general block diagram (the following discussion is gradually expanded by the diagram): The above is arm's page diagram of the typical structure: that is, the two-level

My CentOS 6.0 NTSYSV configuration, the following enable, other full

In Linux, system calls are the only means by which user space accesses the kernel, which are the only legitimate portals of the kernel. In general, applications are programmed by applying programming interfaces (APIs) rather than directly through

If the server has a disk array, run Fdisk-l or SMARTCTL–ALL/DEV/SDA and not get the disk information you want. [Root@localhost/]# fdisk-l warning:gpt (GUID Partition Table) detected on '/DEV/SDA '! The util Fdisk doesn ' t support GPT. Use GNU

Author: Mu Yu, huaqing visionary embedded college lecturer. Today, in the design of embedded products graphical user interface, the use of the main tools are as follows: 1. qt/embedded Qt is a cross-platform, C + + graphical interface application

A. zip command Feature Description: Zip is a compressed file command, and the file is compressed to produce a compressed file with a ". zip" extension.Syntax Parameters-A adjusts the executable automatic decompression file.-b Specifies the directory

This is primarily for clients connecting DB2 databases on Linux operating systems 1, DB2 installation, you can refer to the IBM Help

Say Linux under the ImageMagick and Jmagick installation process, download imagemagick-6.2.6-8.tar.gz,jmagick-6.2.6-0.tar.gz and I downloaded the jpegsrc.v6b.tar.gz, LIBPNG-1.2.10.TAR.BZ2 and tiff-3.8.2.tar.gz, user support Jpg,png and TIFF format

http://blog.csdn.net/xuxinyl/article/details/6454119 We are using VMware virtualization software often found that they can be virtual out of a network card, seemingly very magical technology, in fact, under Linux is very simple, there are two

1. Copy the Linux system folder to the virtual machine 2. Replication completed 3. Open the Linux system file and right-click in the folder and open it in the terminal. 4. Open Terminal 5. Input Decompression Command TAR-JXVF rt3070linuxv2.5.0.3.

Linux Performance View Commands: Linux Performance monitoring: CPU Chapter CPU usage depends largely on what resources are running on the CPU, such as copying a file that usually takes up less CPU, because most of the work is done by DMA (Direct

1. View the contents of the file cat [filename] ///one-time output of all the contents of the file to the terminal more [filename] //By knocking the return way to view the contents of the file line by row, Q-Key end view less [filename] //"Up and

GrepIntroductionOne of the Three Musketeers of the Linux text processing, the File filtering tool (the other two musketeers for sed: Text Editing Tool,awk: Text Report Generator) owned, according to user-specified "mode" Matches the target text line

First,InodeWhat is it? To understand the inode, start with the file storage.The file is stored on the hard disk, and the minimum storage unit for the hard disk is called "Sector" (Sector). Each sector is stored 512 bytes (equivalent to 0.5KB).When