SED / AWK：从文本流中提取模式 [英] sed/awk: Extract pattern from text stream

问题描述

2011-07-01 ... /home/todd/logs/server_log_1.log ...
2011-07-02 ... /home/todd/logs/server_log_2.log ...
2011-07-03 ... /home/todd/logs/server_log_3.log ...

我有一个文件看起来像上面。我想从它输出的文件名作为解压到STDOUT：

I have a file looks like the above. I want to extract the file names from it and output to STDOUT as:

server_log_1.log
server_log_2.log
server_log_3.log

有人能帮忙吗？谢谢！

Could someone help? Thanks!

文件名模式是server_log_xxx.log，并且只在一条线上出现一次。

The file name pattern is server_log_xxx.log, and it only occurs once in a line.

推荐答案

假设XXX占位符是唯一的数字：

Assuming the "xxx" placeholder is only digits:

grep -o 'server_log_[0-9]\+\.log'

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