Linux

Recently transplanted linux2.6.25, follow the previous step in the transplantation manual embedded in the day. A problem occurs during startup: Free init gets stuck after 120kb Analysis: 1. kernel transplantation may fail. 2. It may also be that

When programming, we often want to count how many lines we have written. CodeWhat should I do at this time? Although vim and other editors have lines of code displayed, they cannot be opened one by one and then added up? The WC tool is required

What is a triplet, such as R-X, rwx, ---, and-WX Are All triplet. Used to indicate the user's permissions on files or folders.Any file or folder contains three tuples, which are for the owner, group, and other users.The operations in each triple

SELF: http://blog.csdn.net/eroswang/article/details/4131034 Linux can be considered as a resource managementProgramWhile other applications run on it, Linux manages the application memory allocation, recovery, and so on. For management, it first

How to load a dynamic link library in Linux: the following uses a touch screen as an example to describe how to load a shared library.First, let's look at the following functions:Dlopen ()Function: open a dynamic link library.Include header file:#

From: http://blog.csdn.net/linweig/article/details/5085487 LinuxMonolithic Kernel)That is, most of the functions of the operating system are calledKernelAnd run in privileged mode. It correspondsMicro KernelDifferent, the latter only runs the basic

From: http://blog.yaabou.com /? P = 82 _ User indicates a pointer to a user space, so the kernel cannot be used directly. # Ifdef _ checker __# DEFINE _ User _ attribute _ (noderef, address_space (1 )))# DEFINE _ KERNEL/* default address space */#

This article from: http://www.dzsc.com/data/html/2009-12-22/81040.html Author: Liu Hongtao,Hua Qing vision embedded college lecturer. I. Overview Speaking of writing I2C drivers in Linux, there are currently two main methods: one is to treat I2C

Standard input, output, and error---------------------------------File descriptor---------------------------------Input File-standard input 0Output file-standard output 1Error output file-Standard Error 2--------------------------------- 1.

Main functions: Hacker defenseBased on the Web intrusion exception detection technology, safe3 web application firewall provides comprehensive and in-depth defense for Web applications, effectively identifies and prevents increasingly popular web

  Inotify is a file system event monitoring mechanism and is planned to be included in the forthcoming Linux kernel as an effective replacement for dnotify. Dnotify is a file monitoring mechanism supported by earlier kernels. Inotify is a powerful,

Network structure. The computer of the Linux router is identified as a. It is connected to three network segments, 192.168.1.0/24, 10.0.0.0/8, and 172.16.0.0/16.   Computer A must have three NICs connected to the three network segments.

Chapter 4 compiling high-quality GNU/Linux software 1. Interaction with the running environment Get parameters: getopt and getopt_long functions are used. Header file # include or Function prototype int getopt (INT argc, char * const argv [],

Turn: http://tech.techweb.com.cn/thread-437185-1-1.html   1. About/etc/host, host name and IP configuration file 9'6 V: L + q "X (f''Hosts-the static table lookup for host name (host name query static table): Z. Y3 V/{4 m'p3 G & E :~ 0 w $

Abstract: http://cicikasa.blog.163.com/blog/static/137575355201021992145582/ /Etc/hosts must have a behavior of 127.0.0.1. What is its role? Features: (1) 127.0.0.1 is not only a UNIX system, but also a Linux system or a Windows system.(2) In the IP

I. Time Zone1. view the current time zoneDate-R2. Modify the time zoneMethod (1) tzselectMethod (2) Limited to RedHat Linux and centosTimeconfigMethod (3) applicable to DebianDpkg-reconfigure tzdata3. Copy the corresponding time zone file to replace

#! /Bin/bash# Chkconfig: 35 99 05# Description: Test chkconfig# File:/etc/init. d/fooEnv>/tmp/envlog35: Which runlevel is started?99: s99foo is generated under rc3.d and rc5.d.05: k05f00 is generated under rc0.d, rc1.d, rc2.d, rc4.d, and rc6.d.S:

The network configuration of RedHat Linux is basically implemented by modifying several configuration files. Although you can also use ifconfig to set IP addresses, use route to configure the default gateway, and use hostname to configure the host

Main files in Linux:/Bin: Bin is short for binary. This directory follows the UNIX system habits and stores the most frequently used commands. For example, CP, ls, and CAT./Boot: some core files used to start Linux are stored here./Dev: Dev is the

0. Import code to the repository SVN import/home/user/import file: // home/svnroot/Repository/projectname-M "Initial import"Assume the original code stored in/home/user/import. /Home/svnroot/Repository/projectname is the svn repository. 1. Checkout