BeginningLinuxProgramming example3

lex 词法分析的实现-the realization

用于进程间通信的unix域socket使用示例，同时包含了对通信效率的计时。-For inter-process communication using unix domain socket example, at the same time contains the time of the communication efficiency.

robocup 2D防真base平台 是运行/开发防真机器人的必备平台-robocup 2D anti-base platform is a true run/develop the necessary anti-real robot platform

Linux s3c2410键盘驱动源码，简单实现了小键盘功能。-Keyboard driver source Linux s3c2410 simple function of the realization of a small keyboard.

这是一本教你如何在Linux下进行网络开发的电子教材，如果你又兴趣不妨来试一下，它会给你奇妙的感觉。-This is a teach you how to network Linux developed under the e-learning materials, if you are interested may wish to try, it will give you a wonderful feeling.

linux 下的sgip 协议实现, 能够从server 接受短信内容, 并且能够发送短信给手机用户-sgip under the agreements achieved, can accept messages from the server, and can send text messages to mobile phone users

《UNIX环境高级编程》这本书我认为不错，大家可以--A book about programming in Unix.

Linux下蓝牙驱动，在fedaro5下编译通过！-Linux Bluetooth drivers in the fedaro5 under compile!

gdsl-1.0.2 通用数据类型 包括list，btree等常用的数据结构-gdsl-1.0.2 Common data types include the list, btree and other commonly used data structure

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 "