Their main role is to traverse the directory, according to the command line parameters can be achieved in document features such as copy files to view.

主要的功能是遍历目录，根据命令行参数可以实现文件拷贝文件查看等功能。

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The main characters in the film are members of the public who traverse the square and line up in the cool refuge of the flagpole's narrow shadow.

影片里的主角是那些横越广场的人们，还有那些为了躲避日晒而站立在细长的旗杆影子里的人。

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