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如何替换 awk 结果中的字符串？

tag-icon • tag-icon sed awk json search-and-replace
如何替换 awk 结果中的字符串？

我有一个 JSON 文件，其中包含多次出现的replaceme。

我只想根据上面几行找到的特定字符串替换一个出现的情况。

例如，

[...]
    "title" : {
      "Propertie1" : "xxxx",
      "Propertie2: "replaceme"
    }

    "title2" : {
      "Propertie1" : "xxxx",
      "Propertie2: "replaceme"
    }
    "title" : {
      "Propertie1" : "xxxx",
      "Propertie2: "replaceme"
    }

    "title2" : {
      "Propertie1" : "xxxx",
      "Propertie2: "replaceme"
    }
[...]

在这个例子中，我只想replaceme替换title2。

我awk 'title2/,/replaceme/' myFile能够找到 JSON 文件的一部分。我是否也需要执行 sed 命令，但我不知道如何执行，或者这样做是否可行？

答案1

[vagrant@localhost ~]$ sed -e '/"title2/,/}/{ s/replaceme/title2/; }' test
    "title" : {
      "Propertie1" : "xxxx",
      "Propertie2: "replaceme"
    }

    "title2" : {
      "Propertie1" : "xxxx",
      "Propertie2: "title2"
    }

    "title" : {
      "Propertie1" : "xxxx",
      "Propertie2: "replaceme"
    }

    "title2" : {
      "Propertie1" : "xxxx",
      "Propertie2: "title2"
    }

来源

https://stackoverflow.com/questions/268045/multi-line-search-and-replace-tool

http://sed.sourceforge.net/sedfaq4.html#s4.23.3

4.24. How do I address all the lines between RE1 and RE2, excluding the lines themselves?

Normally, to address the lines between two regular expressions, RE1 and RE2, one would do this: '/RE1/,/RE2/{commands;}'. Excluding those lines takes an extra step. To put 2 arrows before each line between RE1 and RE2, except for those lines:

     sed '1,/RE1/!{ /RE2/,/RE1/!s/^/>>/; }' input.fil

The preceding script, though short, may be difficult to follow. It also requires that /RE1/ cannot occur on the first line of the input file. The following script, though it's not a one-liner, is easier to read and it permits /RE1/ to appear on the first line:

     # sed script to replace all lines between /RE1/ and /RE2/,
     # without matching /RE1/ or /RE2/
     /RE1/,/RE2/{
       /RE1/b
       /RE2/b
       s/^/>>/
     }
     #---end of script---

Contents of input.fil: Output of sed script:
      aaa                           aaa
      bbb                           bbb
      RE1                           RE1
      aaa                           >>aaa
      bbb                           >>bbb
      ccc                           >>ccc
      RE2                           RE2
      end                           end

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