这是一个在linux的vi编辑器下开发的，用gcc编译器编译的一个shell简单的解析程序，包括对简单shell命令，如ls，cd等命令的解析，还包括对一些复杂命令如管道命令的解析-This is a linux developed under the vi editor, and with the gcc compiler to compile a shell of a simple analytic procedures, including a simple shell commands, such as ls, cd, etc. command parsing, but also includes a number of complex commands, such as piping commands Analytical