正则表达式汇总

1.找出字符串里的数字

"abc34325sad" --->34325

Matcher m=Pattern.compile("\\d+").matcher("于修订版 19842");
while(m.find()){
System.out.print(m.group()+"");
}

result:

19842

grep 支持正则表达式搜索

grep '[0-9]\{4,\}' /tmp/a.txt 搜索有至少4个连续数字的行

grep 'RoleCache长度=[0-9]\{4,\}' /tmp/a.txt 搜索有至少4个连续数字的行

搜索中文

双引号中文字懒惰匹配

".*[\u4e00-\u9fa5]+.*?"

单引号中文字懒惰匹配

'.*[\u4e00-\u9fa5]+.*?'

grep 'num=7[0-9]\{4,\}' /data/log/logger/logger.2014-11-*

搜索出带有num=7前缀的后面连续4个数字的日志

[root@VM_252_18_centos logger]# grep 'num=6[0-9]\{4,\}'  /data/log/logger/logger.2014-11-*  
/data/log/logger/logger.2014-11-18-17.log:2014-11-18 17:34:19.251 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=64536
/data/log/logger/logger.2014-11-18-17.log:2014-11-18 17:52:57.823 INFO [gameScheduler-1][LoggerManager.java:54] - 文件处理完毕 num=64536 failed=1,exec=1118572.2 ms interval=17.332531 ms
/data/log/logger/logger.2014-11-18-19.log:2014-11-18 19:17:33.364 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=65590
/data/log/logger/logger.2014-11-18-19.log:2014-11-18 19:36:35.594 INFO [gameScheduler-1][LoggerManager.java:54] - 文件处理完毕 num=65590 failed=1,exec=1142230.5 ms interval=17.414705 ms
/data/log/logger/logger.2014-11-18-19.log:2014-11-18 19:36:35.683 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=68409
/data/log/logger/logger.2014-11-18-19.log:2014-11-18 19:56:18.685 INFO [gameScheduler-1][LoggerManager.java:54] - 文件处理完毕 num=68409 failed=0,exec=1183002.0 ms interval=17.293076 ms
/data/log/logger/logger.2014-11-18-19.log:2014-11-18 19:56:18.784 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=62452
/data/log/logger/logger.2014-11-18-22.log:2014-11-18 22:04:44.547 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=62452
/data/log/logger/logger.2014-11-18-22.log:2014-11-18 22:22:33.249 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=62452 failed=0,exec=1068702.4 ms interval=17.112381 ms
/data/log/logger/logger.2014-11-18-23.log:2014-11-18 23:30:35.724 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=68445
/data/log/logger/logger.2014-11-18-23.log:2014-11-18 23:49:59.506 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=68445 failed=0,exec=1163782.8 ms interval=17.003181 ms
/data/log/logger/logger.2014-11-19-00.log:2014-11-19 00:52:54.803 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=69359
/data/log/logger/logger.2014-11-19-01.log:2014-11-19 01:12:45.359 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=69359 failed=0,exec=1190555.5 ms interval=17.16512 ms
/data/log/logger/logger.2014-11-19-01.log:2014-11-19 01:23:30.906 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=62934
/data/log/logger/logger.2014-11-19-01.log:2014-11-19 01:41:20.206 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=62934 failed=0,exec=1069300.1 ms interval=16.990818 ms
/data/log/logger/logger.2014-11-19-01.log:2014-11-19 01:41:20.349 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=63699
/data/log/logger/logger.2014-11-19-01.log:2014-11-19 01:59:39.349 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=63699 failed=0,exec=1099000.5 ms interval=17.253025 ms
/data/log/logger/logger.2014-11-19-03.log:2014-11-19 03:50:56.145 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=65128
/data/log/logger/logger.2014-11-19-04.log:2014-11-19 04:09:27.597 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=65128 failed=0,exec=1111451.9 ms interval=17.065653 ms
/data/log/logger/logger.2014-11-19-04.log:2014-11-19 04:15:24.328 INFO [gameScheduler-1][LoggerManager.java:45] - 文件处理开始 num=65509
/data/log/logger/logger.2014-11-19-04.log:2014-11-19 04:34:03.212 INFO [gameScheduler-1][LoggerManager.java:58] - 文件处理完毕 num=65509 failed=0,exec=1118884.2 ms interval=17.079855 ms

获取iparam_1之前的，包括iparam_1的字符:

game.2015-06-10-15-44.log:http://183.61.46.225/report.php?iappid=1102562958&idomain=1&ioptype=1001&iactionid=0&iworldid=1027&vuin=29265C44A9B3C6B676AFE8A8FFF25E5F&iuserip=1999718489&ieventTime=1433922159&iparam_1=72&iparam_2=90&vparam_1=5577ea670000038a&vparam_2=-APPDJ35338-20150610-1542395087&iparam_3=1&iparam_4=0

.+&iparam_1

======================

获取夹在两个特殊符号的中间是数字的

iparam_1=95&iparam_2

iparam_1=\d+&iparam_2

========================

把10~14号的充值日志提取出来重新上报

grep -h ioptype=1001 /data/backup/tencent/*/*/*.2015-06-1[0-4]*.log > /data/stat/tencent/charge.log

============================

/data/backup/tencent/game/8036/game.2015-06-15-16-44.log.gz:

/data/backup/tencent/.+log.gz:

提取/data/backup/tencent/和log.gz:的值

==================================

把=后面的都删除

a=啊阿呵吖嗄腌锕錒;

be=萡;

替换

查找目标 =.+

替换为< 空行>

选中所有是英文的

[a-z]+

buffalo 水牛

bull 公牛

cow 母牛

=====================================

grep 'message interval=[0-9]\{4,\}.' /tmp/game.log

获取高延迟的消息