资 源 简 介
实现Shell，能处理命令
cd ：改变进程当前路径
pwd ：查看进程当前路径
pid：查看当前进程号（getpid()系统调用）
logout ：退出shell
ls [-l]
rm [-r]
mkdir, mv, cp-achieve Shell, can handle orders cd : the process of change current path pwd : View current path process pid : View the current process (getpid () system call) logout : withdraw from the shell ls [-l] rm [-r] mkdir, mv, cp
