关键字在文件中出现的最后一次所在的行

orablue

请问如下内容，如何找到最后一次出现[Warning]的行

2015-05-23 14:00:13 5970 [Note] Aborted connection 20763 to db.
2015-05-23 14:05:18 5970 [Warning] Aborted connection 21148 to db.
2015-05-23 14:10:20 5970 [Note] Aborted connection 21553 to db.
2015-05-23 14:15:17 5970 [Warning] Aborted connection 21900 to db.
2015-05-23 14:20:21 5970 [Warning] Aborted connection 22331 to db.
2015-05-23 14:25:23 5970 [Warning] Aborted connection 22667 to db.
2015-05-23 14:30:18 5970 [Note] Aborted connection 22926 to db.
2015-05-23 14:35:18 5970 [Warning] Aborted connection 23190 to db.
2015-05-23 14:40:19 5970 [Warning] Aborted connection 23601 to db.
2015-05-23 14:45:18 5970 [Note] Aborted connection 23947 to db.

关阴月飞

回复 1# orablue

1. grep -n 'Warning' urfile |tail -1
   
2. tac urfile |grep -m1 'Warning'
   
3. sed '/Warning/h;$!d;g'  urfile
   
4. awk '/Warning/{a=$0}END{print a}' urfile
   

复制代码

Herowinter

回复 1# orablue


tac urfile|sed -n '/\[Warning\]/{p;q}'