linux系统命令中的cp命令的编写，包括递归拷贝目录下面的文件/目录-linux system command cp command written recursively copy directory file/directory

Linux shell的使用：i. 将cp命令设置别名为copy，将mv命令设置别名为move。 ii. 使用history命令查看命令历史。 -Linux shell usage:. I would cp command to set an alias for copy, the mv command to set the alias for the move. ii. use the history command to view the command history.

该程序由C语言编写，基于Linux系统，Windows需要用户自行修改-The program is written by C language, based on Linux system, Windows users need to modify