awk 简单实用一则

3,"[ { ""id"" : 1, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10004, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10001, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10003, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10002, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10005, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10006, ""currentAmount"" : 0, ""missionStatus"" : 3 } ]"
4,"[ { ""id"" : 1, ""currentAmount"" : 1, ""missionStatus"" : 1 }, { ""id"" : 10004, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10001, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10003, ""currentAmount"" : 1, ""missionStatus"" : 3 }, { ""id"" : 10002, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10005, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10006, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 2, ""currentAmount"" : 0, ""missionStatus"" : 3 } ]"
5,"[ { ""id"" : 1, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10004, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10001, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10003, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10002, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 10005, ""currentAmount"" : 0, ""missionStatus"" : 3 }, { ""id"" : 1, ""currentAmount"" : 0, ""missionStatus"" : 3 } ]"

看每一行数据中的id的值( ""id"" : 2,  2就是id值)是否有重复，有重复就显示repeat 没有就显示no
首先声明： 我不知道这数据是什么日志 或者程序产生的， 也不知道这样的分析对不对，我只是写shell 以达到别人的需求为目的，解法如下：

awk -F'(""id"" : |,)' '{for(i=3;i<=NF;i+=4) {k+=1;a[$i]}}{print (length(a)==k)?"no":"repeat";delete a;k=0}'

也许不是最好的， 但是能马马虎虎的实现， 做个笔记，方便以后用