如何在bash中找到特定模式

Question

I want to find a pattern '@s241' in a file, which is easy using: 我想在文件中找到模式'@s241' ，使用起来很容易：

grep '@s241' file

or 要么

awk '/@s241/' file

But the problem is that the file contains patterns such as @s2470 or @s2478 但是问题在于该文件包含诸如@ s2470或@ s2478之类的模式

How could I specify the exact pattern is @s247 with no extension? 我如何指定确切的模式是@ s247，没有扩展名？

Thanks 谢谢

Answer 1

Use -w in grep. 在grep中使用-w 。

grep -w '@s247' file

or 要么

grep -P '(^|\s)@s247(\s|$)' file

or 要么

awk '/(^| )@s247( |$)/'