Linux

A system timer is a programmable hardware chip that can interrupt at a fixed frequency. The interrupt is called a timer interrupt. The frequency can be predetermined by programming, called the tickrate ).   The global variable jiffies is used to

Block devices can be randomly accessed, that is, they can jump from one location to another at will when accessing the device. The smallest addressable unit in a block device is the sector, and the size of the sector is the physical attribute of

After qtcreator is installed, there is no desktop startup icon, and it is troublesome to enter commands in the terminal every time. I used to write a method for creating icons for eclipse. This time I gave it to QT and found that I had found the

The device model provides an independent mechanism to indicate a device and describe its topological structure in the system. A Device Tree is created. The core component of the device model is kobject, which is an object class. The kobject

The process address space consists of linear address areas in each process, and the kernel allows the process to use the address of the space. Each process has a 32-or 64-bit flat address space. (Flat indicates that the address space range is an

Many Linux commands support regular expressions. In fact, regular expressions have two forms: Bre (basic regular expression) and ere (extended regular expression ). The difference is that ere has several special symbols than bre: 1. + Repeat one

Reprinted from: http://blogread.cn/it/article/6209  System   # Uname-A # view kernel/OS/CPU information # Head-N 1/etc/issue # view OS version # Cat/proc/cpuinfo # view CPU information # hostname # view computer name # lspci-TV # list all PCI

This article is translated by Chen Hao of cool shell from a Q & A by quroaAre some time-saving tips that every Linux User shocould know? -- Linux users should know how to improve efficiency, and add some understanding. The content of this article is

1. Download JDK1. log on to the Sun JDK official download URL: http://java.sun.com/javase/downloads/index.jsp 2. Download The jdk1.6.0 _ 35-linux-i586-rpm.bin file. Ii. Install JDK1. added the executable permission for the jdk1.6.0 _

If you know about. config, makefile, and kconfig, you can proceed! During Linux compilation, you will often use the graphical operation interface such as make menuconfig to crop the system. However, if a graphical interface is used, the * _

Conversion from http://blog.csdn.net/dingxy/archive/2009/03/20/4008724.aspx and http://blog.csdn.net/dingxy/archive/2009/03/23/4016383.aspx /Etc/profile: This file sets the environment information for each user in the system. When the user logs on

Original article: http://1no1.blog.sohu.com/213402207.html The relationship between hot plug-in/automatic mounting of USB flash drives and linux2.6 kernel, udev, Hal, kernel, gnome-mount, and thunarAfter a new device is inserted,The kernel detects

Register the bus. From: dirvers/base/bus. C:Int bus_register (struct bus_type* Bus){Int retval;Struct bus_type_private * priv; Priv = kzarloc (sizeof (struct bus_type_private), gfp_kernel );If(! Priv)Return-enomem; Priv-> bus = bus;// Private member

Today, I am reading the MAKEFILE file. This makefile is not another makefile. It has many built-in commands, such as origin and patsubst.I have never heard of it. What's worse, I don't even have it on the Internet. It can be seen that this is a very

This time, the main function is entered, in arch/x86/boot/Main. C. Void main (void){/* First, copy the boot header into the "zeropage "*/Copy_boot_params (); # copy the HDR parameter to the boot_params.hdr struct, in the file boot/bootparam. h. /*

After talking about the 00-indexfile, we finally finished kbuild.txt, but how far away we are. Speaking of this, a lot of friends who read my article will think about what you want to do, right,I am also confused! This analysis is correct. However,

Jrtplib library compilation on Linux 1. Introduction to jrtplibRTP is currently the best solution to the problem of real-time transmission of streaming media. To program real-time transmission on the Linux platform, you can consider using

By translating the README file, at least I know that the documentation directory is very important. That directory contains all aspects of Linux design. As a matter of fact, I should learn it directlyReading the content in the documentation

Introduction to Linux Programming Process Creation in Linux Process Concept What is a program and a process? In general, a program is a file that contains executable code and is a static file. A process is an instance of a program that has started

1. Linux mint13 Root Login I installed mint13 and wanted to log on with the root user. So after some research, I finally found the method, which is very simple. I will share the following: Choose menu ---> Control Center-> login window-> Security->