Linux

. tarUnpacking: Tar xvf Filename.tarPackage: Tar cvf filename.tar DirName(Note: Tar is packaged, not compressed!) ）---------------------------------------------. gzDecompression 1:gunzip filename.gzDecompression 2:gzip-d filename.gzCompression: gzip

Cron is a timed execution tool under Linux that can run a job without human intervention. Since Cron is a built-in service for Linux, it does not automatically get up, and you can start and shut down this service in the following ways:/sbin/service

Serial port itself, standard and hardware?The serial port is the physical interface of the serial communication on the computer. Computer history, the serial port has been widely used to connect computers and terminal equipment and a variety of

Memory Management1.listvmastatic void Mtest_dump_vma_list (void){struct Task_struct *task = current; Get the task_struct of the current processstruct Mm_struct *mm = task->mm;struct Vm_area_struct *vma; Get the VMA area of the current processint

Pipeline, an ancient form of inter-process communication. A pipeline is created by a process, and then the process calls fork, and then the parent and child processes can communicate with the pipeline.Function Prototypes:#include int pipe (int

First explain my system configuration: Ubuntu 12.04 gcc 4.6.3A few days did not use Ubuntu, today took out the program, just started to compile a uboot1.1.6 code. stdio.h: There is not a file or directory error, because I am using the ARM-LINUX-GCC

This is not a detailed description of each Linux command, just a few of the more basic commands and related parameters that people often use in their usual work, as well as some simple examples to illustrate the purpose of these commands and how to

Locate: Non-real-time lookup, the lookup process is based on the system-wide file database, the search method is not accurate.The default system writes to the database periodically.Pros: Find Fast.If you do not have a database, you can create it

One, the operating system is composed of several parts:1. Application2. Dynamic link library, static link library3. KernelSecond, the kernel: The kernel is the closest to the bottom, the role of the kernel is to run programs, equipment management,

In different versions of the kernel source code, the location of the header file is different, for example, in#include #include Also Regs-gpio.h, is located in Arch/arm/include/asm in a relatively low version (e.g. 2.6.25), and mach/ Regs-gpio.h is

[[email protected] ~]# Chkconfig--list Show services that start automatically[[email protected] ~]# chkconfig--add * * * Add boot auto-start * * * Service[[email protected] ~]# chkconfig--del * * * Delete boot auto-start * * * Service[[Email

Developing the Linux background service processLinux Daemon Programming methodA daemon (Daemon) is a special process that runs in the background. It is independent of the control terminal and periodically performs some sort of task or waits to

There are several ways to query whether there is a specified process in the current running process, and the following describes a process name that is obtained from a process number to confirm that the process is running.The following example

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!This article modifies the question of self-answers, why learn Linux?I was forced to start with Linux. I was using an old laptop and doing some

Linux built-in support keepalive mechanism, in order to use it, you need to enable TCP/IP network, in order to be able to configure the kernel at runtime parameters, you also need PROCFS and sysctl support.This process involves three user-driven

To think of something simple, we know that > will transfer the data stream to a file or device, so we cannot continue to use this stream unless we go to read the file or device. What should I do if I want to save a piece of information in the

Features of the 1.bashShell programming in Linux is a common task, and it is necessary to familiarize yourself with the features of bash.Yesterday spent a day, on the characteristics of the Bash learning Summary, found that the past self, on the

XBMC Shortcut key profile:/usr/share/xbmc/system/keymaps/keyboard.xml StepForward stepback SmallStepBack Bigstepforward BigStepBack StepBack StepForward bigstepforward BigStepBack Period

Transferred from: http://os.51cto.com/art/201006/207329.htmMain shell built-in commandsThe shell has a lot of commands built into its source code. These commands are built-in, so the shell does not have to search for them on the disk and the

Recently, I have been compiling the Linux kernel, writing Uboot, kernel, and file system to TQ2440. Then there are several questions.(1) Difference between Uboot and BootLoader The BootLoader is literally a "Boot Loader", which is used to boot the