是否可以组合使用尾部和grep？[重复]-Isitpossibletousetailandgrepincombination?[duplicate]

12  

Yes - You use pipe. i.e.

是的 - 你使用烟斗。即

tail -f  | grep 'username'

4  

Yes, you can just use a pipe

是的,你可以使用管道

tail -f fileName | grep username

tail -f fileName | grep用户名

3  

The ack command, which is a grep-like text finder, has a --passthru flag that is designed specifically for this.

ack命令是一个类似grep的文本查找器,它有一个专门为此设计的--passthru标志。

Since ack automatically color codes matches for you, you can use it to search the output of a tailed log file, and highlight the matches, but also see the lines that don't match.

由于ack自动为您的颜色代码匹配,您可以使用它来搜索有尾日志文件的输出,并突出显示匹配,但也可以看到不匹配的行。

tail -f error.log | ack --passthru whatever

All the lines of the tailed log will show up, but the matches will be highlighted.

将显示有尾日志的所有行,但会突出显示匹配项。

ack is at http://beyondgrep.com/

ack在http://beyondgrep.com/

1  

factually I have found it to be more efficient to use: grep username filename | tail

事实上我发现使用它更有效:grep username filename |尾巴