C语言编程实现了linux的shell功能，包括多管道，父子进程，输入输出重定向以及简单的纠错功能。另外还有详细的word说明文档及图片，介绍了程序执行情况和各个函数说明。-C language programming linux realized the shell functionality, including multi-channel, father and son process, input and output redirection as well as the simple error-correcting function. There is also a detailed descr iption of the word documents and pictures, introduced the program implementation and explain the various functions.