参考
https://www.centos.bz/2017/09/linux%E7%B3%BB%E7%BB%9F%E4%B8%8Bfind%E5%91%BD%E4%BB%A4%E9%80%92%E5%BD%92%E5%88%A0%E9%99%A4%E6%9F%A5%E6%89%BE%E7%9B%AE%E5%BD%95%E7%9A%84%E6%96%B9%E6%B3%95/