Linux下的.wav文件播放示例，装了QT的话先#qmake

xtree程序实现-xtree Program

一个多精度高效的浮点计算C语言库 , 基于GMP .-The MPFR library is a C library for multiple-precision floating-point computations with correct rounding. MPFR has continuously been supported by the INRIA and the current main authors come from the CACAO and Arénaire project-teams at Loria (Nancy, France) and LIP (Lyon, France) respectively see more on the credit page. MPFR is based on the GMP multiple-precision library.

Linux 默认情况下，PC 喇叭发出的嘟嘟声音警告（System Beep）. 本程序可以让你随意控制蜂鸣器-Linux by default, PC speaker voice warning issued toot (System Beep). This procedure allows you to manipulate the buzzer

Linux下Drcom客户登录端； 一共两个程序，一个“绿色版本”，无需在内核中加载模块； 一个安全版本，提供校验、加密机制，提供监听网络在线机制。-Linux, Drcom customer login client a total of two procedures, a green version , no need to load the kernel module a secure version, to provide verification, encryption mechanisms to provide mechanisms for monitoring network online.

并口驱动程序，在linux2.4可以编译通过并能运行。是个测试例程，无实际用处。-parallel port drivers, in linux2.4 be able to compile and run. Routine testing is no practical usefulness.

pxa270下利用mmap函数实现LED控制的函数，直接在用户层操作具体的IO口来控制LED，推荐！-pxa270 next LED control function implementation using mmap functions operate directly on the user level of specific IO port to control the LED, recommended!

program this is very useful

Linux系统中OpenSSH的安装配置-Linux System Installation and Configuration of OpenSSH

该源码是miniGUI的全部代码，对想设计GUI的人来说是很好的一个参考-The source is MiniGUI all the code, for those who want to design GUI is a very good reference

使用原始套接字编程-use raw socket programming