A pidgin is a m language developed as a medium of trade, or through other extended but limited contact, between groups of speakers who have no other language in common.

现有一个Windows下使用过的U盘（U盘使用/dev/sda1接口），要求在此U盘上新建myfiles目录，并在此目录下新建一文本文件soft，内容任意，再将该文件复制到/root目录下，最后安全取出U盘。要求写出相关的命令行。