找到匹配的文本并替换下一行 [英] find matching text and replace next line

问题描述

我正在尝试在文件中查找一行并将下一行替换为特定值.我尝试使用sed，但似乎不喜欢\ n.还可以怎么做?

I'm trying to find a line in a file and replace the next line with a specific value. I tried sed, but it seems to not like the \n. How else can this be done?

文件如下:

<key>ConnectionString</key>
<string>anything_could_be_here</string>

我想将其更改为此

<key>ConnectionString</key>
<string>changed_value</string>

这是我尝试过的:

sed -i '' "s/<key>ConnectionString<\/key>\n<string><\/string>/<key>ConnectionString<\/key>\n<string>replaced_text<\/string>/g" /path/to/file

推荐答案

这可能对您有用(GNU sed):

This might work for you (GNU sed):

sed '/<key>ConnectionString<\/key>/!b;n;c<string>changed_value</string>' file

!b否定上一个地址(regexp)并中断所有处理，结束sed命令，n打印当前行，然后将下一行读入模式空间，c将当前行更改为命令后面的字符串.

!b negates the previous address (regexp) and breaks out of any processing, ending the sed commands, n prints the current line and then reads the next into the pattern space, c changes the current line to the string following the command.

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