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介绍在UNIX下怎样使用DBX调试程序的书籍，可以深入了解UNix下的程序调试-UNIX describes how to use the DBX debugger under the books, you can understand UNix under the program debugging

msgctl函数的使用例子 -The example for using msgctl function

44b0 beep gpio beep voice -44b0 beepgpio beep voice

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

在进行linux服务器编程时经常要用到消息队列编程,但直接使用系统调用可能还不能实现需要.此例子演示了怎样在用内核调用操作消息队列,控制消息队列溢出,消除"死"消息的方法.-during regular programming to be used when the message queue programming, but the direct use of system calls may also need to achieve. this example demonstrates how to use the core operation called Message Queue, control Message Queue overflow, eliminating the "death" of news.

linux下bash的源码 -Linux source code under bash

Linux 基本操作指令-4-basic Linux operating instructions-4

linux下的PBX源码（SIP）-the source PBX (SIP)

linux下usb转换串口的驱动程序，学习linux驱动开发的朋友可以参考一下。-under linux serial usb converter driver, learning linux driver development for reference for a friend.

c＋＋编写的ns环境下关于wfq算法的仿真源代码-c++ ns prepared by the environment wfq algorithm for the simulation source code