shell脚本定期清理文件

https://www.cnblogs.com/beilai/p/6293224.html

https://blog.csdn.net/youngqj/article/details/6798065

https://www.rxblog.xyz/linux-rm-crontab/

https://www.2cto.com/os/201208/149552.html

https://www.jianshu.com/p/1a0884770d42

https://blog.csdn.net/luozhuwang/article/details/52525335