[服务应用] linux命令，怎么截取如下的IP [复制链接]

论坛徽章:: 1

发表于 2015-05-17 10:16 |显示全部楼层

如题，文件内如下，怎么截取出IP？谢谢！

Subject: ns23: 118.102.162.66 being blocked because of Failed password
Subject: Freeing 221.10.120.74
Subject: Freeing 222.186.134.79
Subject: Possible DOS attack. Sleeping.
Subject: Freeing 43.229.52.145
Subject: Possible DOS attack. Sleeping.
Subject: Freeing 58.218.204.225
Subject: Freeing 58.218.204.225
Subject: Freeing 58.67.199.9
Subject: Possible DOS attack. Sleeping.
Subject: ns100: 222.186.21.225 being blocked because of Failed password
Subject: Possible DOS attack. Sleeping.
Subject: Freeing 72.167.167.55
Subject: Freeing 58.218.204.225
Subject: Freeing 58.218.204.46
Subject: ns23: 222.186.134.79 being blocked because of authentication
Subject: NS-57: 222.186.134.79 being blocked because of Failed password
Subject: NS-39: 222.186.134.79 being blocked because of Failed password
Subject: forest: 58.218.204.241 being blocked because of Failed password
Subject: ns23: 173.201.27.211 being blocked because of Failed password
Subject: NS-57: 173.201.27.211 being blocked because of Failed password
Subject: 125.69.80.32 being blocked because of Invalid user
Subject: NS-39: 173.201.27.211 being blocked because of Failed password
Subject: Possible DOS attack. Sleeping.
Subject: Freeing 182.100.67.102
Subject: Possible DOS attack. Sleeping.
Subject: Freeing 218.87.111.110

linux, 命令运用

文库|博客

lyhabc

版主

求职 : Linux运维

论坛徽章:: 203

发表于 2015-05-17 11:03 |显示全部楼层

本帖最后由 lyhabc 于 2015-05-17 11:14 编辑

grep -oE '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
-o, --only-matching
只显示正则表达式匹配的部分。（show only the part of a line matching PATTERN）

转义
grep -E

QQ截图20150517111340.jpg

实战分享：从技术角度谈机器学习入门| 【大话IT】RadonDB低门槛向MySQL集群下战书 | ChinaUnix打赏功能已上线！ | 新一代分布式关系型数据库RadonDB知多少？

327sheng

白手起家

论坛徽章:: 1

发表于 2015-05-17 14:33 |显示全部楼层

好的,感谢！！！！！回复 2# lyhabc

实战分享：从技术角度谈机器学习入门| 【大话IT】RadonDB低门槛向MySQL集群下战书 | ChinaUnix打赏功能已上线！ | 新一代分布式关系型数据库RadonDB知多少？

返回列表

Chinaunix › 论坛 › 操作系统 › Linux系统管理 › linux命令，怎么截取如下的IP