Linux

The Ping Command is an application for computers to check whether the lines are in good condition.ProgramThe transmission of exchange data between computers is not encrypted. Therefore, when we use the ping command to detect a server, an illegal

References:LinuxKernel design and implementationHttp://www.ibm.com/developerworks/cn/linux/l-cn-vfs/Http://www.ibm.com/developerworks/cn/linux/l-linux-filesystem/Http://www.ibm.com/developerworks/cn/linux/l-cn-read/index.html  1. Important

The kernel code for this analysis is 2.6.32-220. In addition, we will not consider SMP first. The current Linux scheduler consists of two schedulers: The Master scheduler and the periodic scheduler (both collectively referred to as the core

Process Scheduling Initialization As this process involves the process management module, we will introduce the detailed process of this module in the future. Therefore, we will mainly deduct the scheduling-related content here. The kernel entry for

Real-Time Scheduler class There are two types of real-time scheduling processes:Cyclic process sched_rr: a cyclic process has a time slice, which reduces the running time of the process. When the time slice is used up, it is set to the initial value

Other CFS class API Set_curr_task_fair (RQ): Set the current running processes in the CPU running queue to the processes currently running in the CFS running Queue (set_curr_task_fair ), for group scheduling, the upper-level Se must also be set as

1. Role of shell export Http://blog.sina.com.cn/s/blog_62945c360100ffvk.html   2, alias ls = "ls -- color = auto"   After installing archlinux, I found that when using the ls command, the directory and file were not separated by color and it

1. Install software (pay attention to the number of digits of the operating system) Rpm-IVH nfs-utils-lib *. rpm Rpm-IVH nfs-utils *. rpm Rpm-IVH Portmap *. rpm 2. Edit the configuration file/etc/exports. Add the following content: /Opt/convirt/nfs

If multiple NICs exist on the server, you may need to enable or disable the NIC controller due to different Nic features. You may need to adjust the NIC name during the adjustment process, for example, change eth1 to eth0, just a handsome guy and a

After installing windows and then installing Linux, sometimes the Windows boot is lost, and you can directly go to Linux at startup. You can use the following method to restore the data. I installed fedora and adjusted it appropriately for

Function declaration select function Int select (INT NFDs, fd_set * readfds, fd_set * writefds, fd_set * limit TFDs, struct timeval * timeout );Note:Int maxfdp is an integer that indicates the range of all file descriptors in the collection, that is,

Path for Linux Device Driver engineers-device model (Lower Layer) Upper Layer Model K-Style Reprinted please indicate from Hengyang Normal University 08 electric 2 Y-Kee http://blog.csdn.net/ayangke,QQ:843308498   1. Important knowledge points: The

Linux Driver Model ----- Platform Author: Yili Xie yili.xie@gmail.com Date: 2010-1-25 You are welcome to reprint it. Please indicate the source     Platform device and driversFrom , we can understand the driver model interfaces of platform Bus:

Path of driver engineers for Linux devices-Analysis of dm9000 NIC Driver K-style Reprinted please indicate from Hengyang Normal College 08 electric 2 k-style http://blog.csdn.net/ayangke,QQ:843308498 mailbox: yangkeemail@qq.com Dm9000 is a network

~Abbreviation of the current user directory Cd ~ CD/home//   -- HelpGet help Vi -- Help   TabAuto-completion. Double-click the tab to display the completion prompt. If the current command is unambiguous, it is complete. If there is any ambiguity,

Path to Linux Device Driver engineer-Use of kernel linked list K-Style Reprinted please indicate from Hengyang Normal College 08 electric 2 K-Style http://blog.csdn.net/ayangke,QQ:843308498 mailbox: yangkeemail@qq.com   I. Important knowledge points

Path to Linux Device Driver engineer-simple character Device Driver K-Style Reprinted please indicate from Hengyang Normal College 08 electric 2 K-Style http://blog.csdn.net/ayangke,QQ:843308498 mailbox: yangkeemail@qq.com   I. Important knowledge

Driver file: /* * Simplechrdriver. c * * Copyright (c) 2008 breathomn * */ # Include # Include # Include # Include # Include /* Copy _ * _ User */ StaticUnsigned int major_num = 0; StaticInt global_var = 0; StaticSsize_t

Arm-Linux kernel porting (1)-kernel Startup Process Analysis K-style   Reprinted please indicate from Hengyang Normal College 08 electric 2 k-style http://blog.csdn.net/ayangke,QQ:843308498 mailbox: yangkeemail@qq.com   Kernel version: 2.6.22 why is

Embedded Linux File System A typical embedded Linux system usually includes the boot zone, kernel zone, and file system Zone according to the storage space. The boot area stores Bootloader and kernel parameters. The kernel area stores customized