grep -a "businessID\": 3" kafka.log|grep "componentID\": 18"
--需求：过滤下述log中的红色字符串
............. null, "group2": null, "group3": null, "group4": null, "group5": null, "flag": null, "businessID": 1, "componentID": 4, "extendID": null}
原文：http://www.cnblogs.com/arcer/p/7872021.html