Linux

PS-Ef | grep tomcat/view Process Rm-RF tcar * Removal MV ../tcar. War./move Kill-9 25383 kill the process CTRL + C to end the current command PWD view current path /*************************************** ***/Dir View Current Directory Ls

When I recently read the kernel version of Linux kernel,It is found that the kernel has a module that simulates floating point operations.   In the ARCH/MIPS/Math-emu/directory, the kernel uses integer operations to simulate floating point

  When compiling a driver module 2.6.28 two days ago, an error is reported: Unresloved symbol. Later, it was found that the config_modversions error.   In the evening, I found that:   In Linux, there are many exports used by other modules. In

Introduction:This book seems unknown compared to LDD, and even has a poor reputation in UNIX-based programming. However,This book is very suitable for newbie, who has no Linux experience at all. According to the author's ideas,As small as a

Chapter 1: Getting startNo one book is suitable for anyone. This book is suitable for C programmers without any Linux experience. This chapter mainly introduces the development history of unix linux gun, UNIX is a trademark by the Open Group and

[Share] FAQs for Linux beginnersFAQs for Linux beginners1. How to create multiple usersWe would like to remind you that you should not always use the root user because the root user has the highest power in the system and may damage the system

The I2C bus is easy to use. This article describes the I2C driver structure in Linux, and provides the implementation of I2C device drivers and applications.1 Introduction I2C (Inter-IntegratedCircuit is a two-line serial bus developed by Philips to

1. Create a directoryMkdir-P test/sub 2. Write hello. C and hello. h under sub /./***** Hello. c *****/# Include # Include "Hello. h"Void Hello (){Printf ("hello! /N ");} /***** Hello. h *****/# Include Void Hello (); 3. Compile the

1. grep IntroductionGrep (Global Search Regular Expression (re) and print out Line is a powerful text search tool that can use regular expressions to search for text and print matching rows. UNIX grep Family PackageIncluding grep, egrep, and fgrep.

I posted a big post on BBS, as shown in the following figure. I didn't get a reply. Hey, it's really a shame ~~~, Meng Shixiong gave some advice to preliminarily understand the calling mechanism of LINUX module functions: First, the application

Simple configuration of Samba server in Linux Take Red Hat Enterprise Linux as an example to briefly introduce the configuration of Samba Server 1. Configure the Samba server, mainly to set the configuration file/etc/samba/smb. conf A simple

Two important struct cdev and file_operations are involved here. The former is the descriptive character device, and the latter is the entry point of the device driver. For the description of the member with file_operations, please refer to the

From 2.4 to 2.6, the Linux kernel has changed greatly in terms of the module mechanism, device model, and some core APIs that can be loaded, device Driver developers are faced with the task of porting a driver from 2.4 to 2.6 kernel, or enabling the

1. CPUA. the CPU has the so-called "Frequency Doubling" and "external frequency". The external frequency is the speed at which all the system interface devices operate. The frequency doubling is the computing speed added during the CPU operation!

The implementation of automatic logon when the startup level is 3 (two steps are required. For the first step, refer to the online documents. The second one is too troublesome and can be implemented simply) 1. mingetty-1.00-3.src.rpm Software

Server program compiled in Linux # Include# Include# Include# Include # Define maxline 100# Define SA struct sockaddr# Define socket int Using namespace STD; Int main (){Cout Struct sockaddr_in server, client; Socket listen_sock = socket (af_inet,

Developing our own server client programs in Linux, we pursue all programs from the minimum model, which is the simplest and easiest application framework to expand. As a habit, I like to write my own G ++ files in SH files. Every time, I only need

Prepare tools and systems Arm-linux-gcc-4.4.3.tar.gz Ubuntu 11.04: http://tw.releases.ubuntu.com/releases/.pool/ubuntu-11.04-desktop-i386.iso   1. Create a directory $ Sudo mkdir/usr/local/ARM 2. Copy an object The arm-linux-gcc-4.4.3.

In Linux, development often encounters many errors (set errno). eagain is a common error (for example, used in non-blocking operations ). Literally, We are prompted to try again. This error often occurs when the application performs non-blocking

I first came into contact with the device driver model when I was studying MMC/SD/sdio last year, but I was confused when I was reading books all day, in the end, this part of knowledge is not well organized. Now I am again exposed to this part of