更换SED两个已知串之间的串不明 [英] replace a unknown string between two known strings with sed

问题描述

我有以下内容的文件：

WORD1 WORD2 WORD3

我如何使用SED与富来代替WORD1和WORD3之间的字符串，例如，该文件的内容更改为以下内容：

WORD1富WORD3

我尝试以下，但显然我失去了一些东西，因为没有产生预期的结果：

SED -i'''S / WORD1。* WORD3 /富/ G'file.txt的

解决方案

  SED -i的/ WORD1。* WORD3 / WORD1富WORD3 / G'file.txt的
 

或

  SED -i的/（WORD1）。*（WORD3）/ \\ 1富\\ 2 / G'file.txt的
 

您可能需要逃避圆括号，取决于你的sed变种。

I have a file with the following contents:

WORD1 WORD2 WORD3

How can I use sed to replace the string between WORD1 and WORD3 with foo, such that the contents of the file are changed to the following?:

WORD1 foo WORD3

I tried the following, but obviously I'm missing something because that does not produce the desired results:

sed -i '' 's/WORD1.*WORD3/foo/g' file.txt

解决方案

sed -i 's/WORD1.*WORD3/WORD1 foo WORD3/g' file.txt

or

sed -i 's/(WORD1).*(WORD3)/\1 foo \2/g' file.txt

You might need to escape round brackets, depends on your sed variant.

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