Linux

Error phenomena:Use other tools to access Oracle under Windows to confirm that the Chinese display is normal. The Chinese content of the query data table using Sqlplus under Linux is garbled.Analysis and Solution:Because Windows is normal, the

"Copyright notice: Reprint please keep Source: Blog.csdn.net/gentleliu. E-mail: shallnew*163.com "Before processing the 2-tier packet, the kernel must process the interrupt system, set up an interrupt system, and possibly process thousands of frames

Introduction:A well-written program is generally stored in memory, then the code, data and other parts of the program, how to regularly stored in the memory it?AA stored program can be divided into five parts: body segment, initialization data

Introduction: When writing a program, often use the goto statement inside the function to jump, so that the error processing, if you want to jump between functions what to do? Use the setjmp and LONGJMP functions.To show an example program:#include

2.6 Cores1> Modify the linux-source-2.6.31/kernel/sys.c file to add the system response function at the end of the file. The function is implemented as follows:asmlinkage int Sys_mycall (int number)  {PRINTK ("This is the first system call I added")

Mount file system with Unmount file systemMount/umountNO1. Mount Optical Drive[Email protected] root]# mount-t Iso9660/dev/cdrom/mnt/cdromNO2. Mount Optical drive, support Chinese[Email protected] root]# mount-t iso9660-o codepage=936,iocharset=cp936

Today to understand the Linux boot process, as well as the composition of the kernel, let us build a small Linux.Startup process:POST-----Bootloader (divided into two segments 1, the first 446 bytes of the disk,

First, User Switching:Reason: 1, the use of general account operating system, this is a good habit of daily operation. 2, with lower privileges to start the system services: such as Apache software, you can set up Apache users to launch Apache

Category: 1) through the mii-tool Directive[Email protected] root]# Mii-tooleth0:negotiated 100basetx-fd, link okEth1:no LinkOr[Email protected] root]#mii-tool-veth0:negotiated 100basetx-fd, link okProduct Info:vendor 00:50:43, Model 2 Rev 3Basic

Sed is a good file processing tool, itself is a pipe command, mainly in the behavior of the unit processing, you can replace the data rows, delete, add, select and other specific work, the following first understand the use of SEDThe SED command

Transferred from: http://onlyzq.blog.51cto.com/1228/546459echo display with color, need to use parameter-EThe format is as follows:Echo-e "\033[word background color; text color m string \033[0m"For example:Echo-e "\033[41;37m Tonyzhang

Compile and run C + + under VIVI 1.cpp (create CPP file name)I (enter insert mode to start editing)Enter completion code and press ESC to exitThen press Shift +: Enter Wq (Save and exit)g++ 1.cpp-o 1 (Compile the 1.cpp file, the compiled executable

One. Raid 0 Creation# mdadm-c/dev/md0-n 2-a yes-l 0-x/dev/sdb1/dev/sdb2/dev/sdb3[Create RAID 0, where-c is created,-n Specifies the number of disk blocks,-a You haven ' t given Enough devices (real or missing) to the create this array,-x specifies

After making sure that you have Git installed, we can download the Linux kernel from git, and then we'll start by talking about the Linux version classification.On the Linux Kernel official website (https://www.kernel.org/), we often see the

1)/dev/null Garbage bin black hole device and special wording　　Imagine if I knew the error message would occur, so I would ignore the error message and not display or store it? This time the black hole device/dev/null is very important!

1. DriversLed.c#include #include #include #include #include #include #include #include #include #include #include #include #include #include #define LIGHT_ON 0x01#define Light_off 0X02#define GPBCON S3c2410_gpbcon#define GPBDAT S3c2410_gpbdat#define

The Chkconfig command is primarily used to update (start or stop) and query run-level information for system services. Keep in mind that Chkconfig does not immediately automatically disable or activate a service, it simply changes the symbolic

First, view disk and partition information1. Use Fdisk to view disk capacity, cylinder, sector, and partition information: fdisk [-l] DEVICE650) this.width=650; "height=" 237 "title=" image "style=" border:0px; "alt = "image" src= "http://img1.51cto.

1 connect the test machine and the development machine via USB2 viewing USB connections with commandsShell command: LSUSBThe current USB connection will be displayed:Shell code: Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root Hub

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