Linux

Reference URL: Http://www.denx.de/wiki/DULG/HowCanIAccessUBootEnvironmentVariablesInLinux   Http://blog.csdn.net/hangbing0203/article/details/4314576 Http://labs.igep.es/index.php/How_to_modify_the_uboot_environment_from_userspace  

Run */5 * every five minutes **** 0 *** per hour **** Execute 0 0 every day *** Execute 0 0 every week ** 0 0 0 1 per month ** Execute 0 0 1 1 * every year * For detailed usage, refer to the blog http://yangqijun.iteye.com/blog/1173016

ArticleDirectory   Use sctp to optimize the network Five risks in Linux socket programming Http://www.ibm.com/developerworks/cn/linux/l-hisock.html    Use sctp to optimize the network The traffic control transmission protocol combines

1. Prepare PNG images; 2: Install netpbm Apt-Get install netpbm 3: Create a PPM Image Save a PNG Image logo.png as follows: # Pngtopnm logo.png> linuxlogo. PNM # Pnmquant 224 linuxlogo. PNM> linuxlogo224.pnm # Pnmtoplainpnm linuxlogo224

I have been using putty + SSH to log on to Linux. If I want to use the GUI and xming, I think it is safe and convenient. The only bad feeling is that Linux Desktop cannot be used directly. Recently, I saw Article You can directly access the Remote

In the NC command in Linux,-l follows the listening port, and-P follows the local port used to establish a connection with the target host. The two cannot be used at the same time.   NC-l 1234 NC 127.0.0.1 1234Establish a connection in Port 1234

Finally, the roadmap for Linux learning:1. Master at least 50 Common commands.2. Familiar with Gnome/KDE and other X-Windows desktop operations.3. Master the common installation methods of. tgz,. rpm and other software packages.4. Learn how to add

Original article: http://www.cnblogs.com/gylei/archive/2012/03/10/2388659.html Cause Analysis 1:If/var is partitioned separately, it may be because the partition capacity is too small. when updating the system or installing large software, the/var

Link: http://blog.csdn.net/ytz_linuxer/article/details/4740512 In Linux,. So is based on dynamic links in Linux. Its functions and functions are similar to. DLL files in windows.   The introduction of. So is as follows:   I. Introduction

Http://www.ibm.com/developerworks/cn/linux/l-ipc/part5/index1.html from Introduction:Shared memory is the most useful communication method between processes and the fastest IPC format. The shared memory of two different processes A and B means

Ii. Linux driverProgramFramework Linux regards all external devices as a special type of files, which are called "Device Files". If a system call is an interface between the Linux kernel and applications, the device driver can be seen as an

Iii. PCI driver Program Implementation1. Key Data StructureThere are three address spaces on the PCI device: pci I/O space, PCI storage space, and PCI configuration space. The CPU can access all the address spaces on the PCI device. The I/O space

Sogou cloud input method is officially released, so you can use it without installing sogou input method. The most important thing is that the cloud input method is compatible with multiple operating systems, especially Linux and MACOs. Sogou cloud

Https://www.ibm.com/developerworks/cn/linux/l-ipc/part1/ from   Introduction:In this series, the author outlines several main methods for inter-process communication in Linux. Among them, pipelines and named pipelines are one of the earliest

$ Ll/dev/input/micecrw-RW ---- 1 Root 13, 63/dev/input/mice read/dev/input/mice device node source code is as follows: # Include # Include # Include # Include # Include // The followingCodeFrom libminigui-1.6.10/src/ial/native. c// Data can be

Linux Kernel Input subsystem analysis 8422 people read comments (16) collect reports Author: Liu Hongtao,Hua Qing vision embedded college lecturer. Android, X Windows, QT, and many other applications support input devices, such as the keyboard,

Linux iostat monitors Io status Http://www.orczhou.com/index.php/2010/03/iostat-detail/ 2010-03-1 | classification: Linux, technical details | label: Linux | 9,983 views In Linux, performance problems occur. Generally, we can use top, iostat, free,

Http://www.uplinux.com/shizi/wenxian/4429.html Linux NIC Driver Analysis Learning should first simplify the problem and complicate the problem. Starting from the very beginning, we began to deal with complicated problems, which would inevitably

The Board finds that framebuffer Initialization is very late. Just modify it as follows: // Late_initcall (dovefb_init );Module_init (dovefb_init ); Mainly refer to the followingArticle: Bytes ---------------------------------------------------

1. Download the installation package Download the installation package from the Hbase official website, and then tar xfz hbase-0.94.2.tar.gzcd hbase-0.94.2chmod ugo+x ./bin/*.sh Note: You must modify the script permission in the bin/directory.