https://blog.youkuaiyun.com/rodjohnson_523391/article/details/84802587
sed -n ‘/2019-07-29/,/2019-07-29/p’ catalina.out > catalina_20120515.out
sed -n ‘/2019-10-29 07:00:00/,/2019-10-29 08:00:00/p’ catalina.out >> today.log
查看catalina 里字符串
cat catalina.out|grep ‘2019-10-29 13:38:01’