脚本帮助过滤 IP 地址

Question

我有一个很大的文本文件，我想从中提取数据行，我想提取包含我可以指定的 IP 地址的每一行（zzzz）

2015-02-26 00:00:00 Local3.Info x.x.x.x Feb 26 05:19:52  y.y.y.y 00:05:06:17 , C8:D7:19:61:D1:9B DHCP REQ: Valid IP->Valid IP
2015-02-26 00:00:00 Local3.Info x.x.x.x Feb 26 05:32:56  y.y.y.y 00:0D:8A:80 , 48:F8:B3:54:43:EB DHCP REQ: Valid IP->Valid IP
2015-02-26 00:00:00 Local5.Notice   x.x.x.x Feb 26 05:32:56  z.z.z.z BTS Sending CDR: 067,H,00:F0:3A:99,00:0D:8A:80,48:F8:B3:54:43:EB,z.z.z.z,10780,906
2015-02-26 00:00:00 Local3.Info x.x.x.x Feb 26 05:32:56  y.y.y.y 00:0D:8A:80 , 48:F8:B3:54:43:EB DHCP ACK: Valid IP->Valid IP: y.y.y.y
2015-02-26 00:00:00 Local5.Notice   x.x.x.x Feb 26 05:00:11  z.z.z.z AAA: Modulation Change to 16QAM recvd from 00:16:C4:ED

因此新文件中的输出将如下所示

2015-02-26 00:00:00 Local5.Notice   x.x.x.x Feb 26 05:32:56  z.z.z.z BTS Sending CDR: 067,H,00:F0:3A:99,00:0D:8A:80,48:F8:B3:54:43:EB,z.z.z.z,10780,906
2015-02-26 00:00:00 Local5.Notice   x.x.x.x Feb 26 05:00:11  z.z.z.z AAA: Modulation Change to 16QAM recvd from 00:16:C4:ED

任何帮助都将不胜感激！提前致谢

Answer 1

你应该能够使用grep

grep -F 'z.z.z.z' logfile > results

-F( )参数--fixed-strings可防止使用正则表达式语法（匹配“任何字符”）将句点分隔符解释为文字句点。

Answer 2

您可以使用 grep 或 awk。

grep 'z.z.z.z' your_file

awk 有更多选项

awk '/z.z.z.z/ {print}' your_file

但 awk 可以进行更多格式化，并且有更多选项

看https://www.digitalocean.com/community/tutorials/how-to-use-the-awk-language-to-manipulate-text-in-linux

和

http://www.grymoire.com/Unix/Awk.html

了解详情

还有很多其他的选择，perl 也可以用……

Answer 3

有谁错过了sed？下面是：

sed -i.bak '/z\.z\.z\.z/!d' file.txt

原始文件将备份为“file.txt.bak”，修改后的文件将为“file.txt”。如果您不想备份原始文件：

sed -i '/z\.z\.z\.z/!d' file.txt

如果您只想打印输出而不是保存它：

sed '/z\.z\.z\.z/!d' file.txt

Answer 4

Perl 替代方案：

$ perl -lane 'print if /z.z.z.z/'  < input.txt                                                                               
2015-02-26 00:00:00 Local5.Notice   x.x.x.x Feb 26 05:32:56  z.z.z.z BTS Sending CDR: 067,H,00:F0:3A:99,00:0D:8A:80,48:F8:B3:54:43:EB,z.z.z.z,10780,906
2015-02-26 00:00:00 Local5.Notice   x.x.x.x Feb 26 05:00:11  z.z.z.z AAA: Modulation Change to 16QAM recvd from 00:16:C4:ED