参考https://blog.csdn.net/nixonwuying/article/details/86220992
以查找“course-activity/6/2021106055443-llbs7h.mp4”为例
方法一：当前文件夹下操作
find ./ -name course-activity/6/2021106055443-llbs7h.mp4
方法二：未知准确文件夹查找
find /home/yuntaitest/edusoho/app/ -name 6/2021106055443-llbs7h.mp4