Linux

/** Watchdog usage. * Author: serval li * Date: Jun 27th, 2012 **/# include # include # include # include # include # include # include # include # include # include # include int main (void) {int FD; int timeout, flag; char cmd [256]; If

1 # include 2 # include 3 int main (INT argc, char * argv []) 4 {5 char Buf [1024]; 6 file * FP; 7 file * dst_fp; 8 int I, J; 9 char * line; 10 char file_name [256]; 11 int space_line = 2; 12 INT skip_line = 3; 13 14 for (I = 0; I

W command Directly run the W command to list all users logged on to the current system and their details, such as user, login @, and from ), and how to log on (what) The WHO command can also be viewed, but there is no such detailed information.

After I try centos on windows, I will format centos directly. The grub startup screen will appear on the startup system. There are two solutions.   1: fdisk/MBR can be used to repair MBR in DOS environment.   2: If there is no DOS disk, run the

ARM Linux kernel Startup Process Let's take a look at the process of generating vmlinux from the compilation link, which is composed of a lot of. o file links. The first one isKernel/ARCH/ARM/kernel/head-armv.o, and we also seeLDS link file

LinuxDevice Model (Basic Principles) According to ldd3, the Linux device model can be considered as an advanced textbook, which is unnecessary for most program authors. But I personally think: For an embedded Linux underlying programmer, this part

Document directory I. Overview LinuxGetting started Keywords    LinuxDevelopment Environment    OverviewDescription    This article is an entry-level document for Linux development. It describes how to establish and compile the environment.  I.

Document directory I. Overview LinuxKernel upgradeLCDDriver replacement (Development Board) Keywords    Kernel upgrade, Change driver, LCD    OverviewDescription    This document describes how to add an existing LCD driver to a new Linux

-----------------------------------------------------------#! /Bin/bash Set-e Command 1Command 2... Exit 0---------------------------------------------------------- Every script you write shoshould include set-E at the top. this tells bash that it

This article describes how to set in Linux to make your Linux system more secure.1. You must set the BIOS password to prevent others from entering your system by modifying the first boot device (such as the boot disk. 2. set the password of the

Document directory I. Overview LinuxPractice of creating a virtual disk Keywords    Ramdisk VFSVirtual Disk busybox    OverviewDescription    How to Use busybox to create a Linux Virtual Disk and how to integrate the andoid Virtual Disk  I.

Document directory 1. kernel startup address 2. kernel Startup Process Analysis Linux Kernel startup Analysis1. kernel startup address 1.1. Glossary Ztextaddr Extract the start address of the Code. There is no physical address or virtual

  Help man There may be multiple man pages. If passwd has two man pages:/Usr/share/man/Man1/passwd.1And/Usr/share/man/man5/passwd.5 Man passwd displays the first one by default./Usr/share/man/Man1/passwd.1 MAN 5 passwd will display/Usr/share/man/man5

Use commands Route command to obtain the route table As follows: > Route Kernel IP routing tableDestination gateway genmask flags metric ref use iface10.70.0.0*255.255.0.0 u 0 0 0 eth0169.254.0.0*255.255.0.0 u 0 0 0 eth0Default 10.70.10.252 0.0.0.0

With a fork statement, a new process is born, but it is only a clone of the old process. Then, with exec, the new process was reborn and independent from home, and started a career serving the people. A person is dead, and the process is the same.

In some cases, you need to configure the serial port console for Linux for debugging purposes, or if Linux does not have a video card at all, you also need to configure the serial port terminal. One serial port console will send all terminalsThe

Static route modification commands in LinuxMethod 1:Add routeRoute add-net 192.168.0.0/24 GW192.168.0.1Route add-host 192.168.1.1 Dev 192.168.0.1Delete A routeRouteDel-net 192.168.0.0/24 GW 192.168.0.1 Add routeDel Delete route-NetRoute entry to a

1. Insert text┌ ── ┬ ── ─ ┐│ Command │ description │├ ── ┼ ── ─ ┤│ I │ insert text before the current character │├ ── ┼ ── ─ ┤│ I │ insert text at the beginning of the line │├ ── ┼ ── ─ ┤│ A │ add text after the current character │├ ── ┼ ── ─ ┤│ A │

The use of channels is important in Linux systems. channels are similar to the connectors between different commands, which greatly facilitates the expansion of system functions. Below we will briefly introduce several examples of channel usage and

It is really difficult to get started with Emacs. After the two days of use, we will summarize the following:   1: Install. Run the sudo apt-Get install Emacs command in Ubuntu. I am using Ubuntu 10.04 and use two sources that are said to be 163. 1.1