programing in uclinux

Create and maintain a hardware diagram of the system. Verify that peripherals are installed correctly and tested. Monitor performance of hardware components. Arrange for repair in event of hardware failure

用系统调用signal()让父进程捕捉键盘上来的中断信号（按Ctrl-C键）；当捕捉到中断信号后，父进程用系统调用kill()向两个子进程发出信号，子进程捕捉到信号后分别输出下列信息后终止： 　Child Process 1 is Killed by Parent! 　Child Process 2 is Killed by Parent! 父进程等待两个子进程终止后，输出如下的信息后终止： Parent Process is Killed!-with system call signal () so that the process of capturing the father onto the keyboard interrupt signal (Ctrl-C bond); When the interrupt signal capture, the father of the process of using system calls kill () to process two signals son, the child process to capture the signal output respectively after the termination of the following information : Process is a Child Killed by Parent! Process 2 Child is Killed by Parent! the process of waiting for the father of two-after the termination process, the following information output after termination : Parent Process is Killed!

des rsa des3 算法 可移植到symbian windows mobile 等平台-des rsa des3 algorithm can be ported to platforms such as symbian windows mobile

此文件为arm-LINUX的ROOTFS.cramfs文件系统，已经移植好，可直接使用，下载后把后缀改为BZ2-This document ROOTFS.cramfs the arm-LINUX file system, have been transplanted and can be used directly, after downloading the suffix changed to BZ2

最权威的LINUX内核安装与更新-most authoritative Linux kernel installation and updating

这是一个linux下时间通信的server端和client端的源码,下载后分别保存，直接编译就可运行，希望对大家能有所帮助！-This is a time under linux server communication and client-side source code, After downloading were preserved, can be directly translated operation, we can hope for some help!

该文档是基于博创实验箱指导书,里头有多线程、ad转换、QT在LINUX上移植、无线电通信等等,具有源码解析及电路图-The document is based on the experimental Fiberxon guide book box, inside a number of threads, ad conversion, QT on transplantation at LINUX, radio communications and so on, with source code analysis and circuit

ARMCortexM3s8962.rar very important ARMCortexM3s8962.rar very important-ARMCortexM3s8962.rar very important ARMCortexM3s8962.rar very important

QT 开发的简单计算器源码，经过简单编译即可用于arm开发板上-QT developed a simple calculator source code, after a simple compilation development board can be used to arm

写一个脚本文件checkuser,该脚本运行时带一个用户名作为参数，具体要求如下： 1)如果命令行格式不符合要求，应有错误提示信息； 2)在/etc/passwd文件中查找是否有该用户， 如有，则输出“Found in the /etc/passwd file.” 否则，输出“No such on our system” -Write a script file checkuser, the script run-time with a user name as a parameter, and specific requirements are as follows: 1) If the command-line format does not meet the requirements, there should be error message 2) in/etc/passwd file to check if there were any users, and if so, then the output " Found in the/etc/passwd file. " Otherwise, output" No such on our system "