Possible Duplicate:
extract regexp result from string and write it to a variable可能重复:从字符串中提取regexp结果并将其写入变量
Here is my command :
这是我的命令:
grep -E '\*[[:space:]]+FIN[[:space:]]+([^)]+?)') myfile
grep -E'\ * [[:space:]] + FIN [[:space:]] +([^]] +?)')myfile
It outputs :
它输出:
- FIN (SUCCESS)
And I would like it outputs only :
而且我希望它仅输出:
SUCCESS
How can I tell grep to do it ?
我该如何告诉grep这样做?
3 个解决方案
#1
5
You can pipe the output of your grep command to the awk command.
您可以将grep命令的输出通过管道传递给awk命令。
grep -E '*[[:space:]]+FIN[[:space:]]+([^)]+?)') myfile | awk '{print $2}'
I am not sure how to do that with grep alone, as it is not really tailored to that exact use case. Since you are on a platform where grep is, use pipes to your advantage when you can have one command solve part of the problem, and another command the other part.
我不确定如何单独使用grep,因为它不是真正适合那个确切的用例。由于您位于grep所在的平台上,因此当您可以使用一个命令解决部分问题时使用管道,而另一个命令则使用另一个部分。
#2
3
grep is not capable of outputting a single capture group, but you can use sed to do it instead:
grep无法输出单个捕获组,但您可以使用sed来代替:
sed 's/\*[[:space:]]\+FIN[[:space:]]\+(\([^)]\+\))/\1/g' file
#3
2
If you use ack then you can use match groups and the --output switch:
如果你使用ack,那么你可以使用匹配组和--output开关:
ack '\*\s+FIN\((.+?)\)' --output='$1' myfile
#1
5
You can pipe the output of your grep command to the awk command.
您可以将grep命令的输出通过管道传递给awk命令。
grep -E '*[[:space:]]+FIN[[:space:]]+([^)]+?)') myfile | awk '{print $2}'
I am not sure how to do that with grep alone, as it is not really tailored to that exact use case. Since you are on a platform where grep is, use pipes to your advantage when you can have one command solve part of the problem, and another command the other part.
我不确定如何单独使用grep,因为它不是真正适合那个确切的用例。由于您位于grep所在的平台上,因此当您可以使用一个命令解决部分问题时使用管道,而另一个命令则使用另一个部分。
#2
3
grep is not capable of outputting a single capture group, but you can use sed to do it instead:
grep无法输出单个捕获组,但您可以使用sed来代替:
sed 's/\*[[:space:]]\+FIN[[:space:]]\+(\([^)]\+\))/\1/g' file
#3
2
If you use ack then you can use match groups and the --output switch:
如果你使用ack,那么你可以使用匹配组和--output开关:
ack '\*\s+FIN\((.+?)\)' --output='$1' myfile