使用 JQ 后就地编辑文件 Select

Question

在 sed 中使用 JQ 就地编辑 json 文件，例如 -i 我找到了很多解决方案，例如

jq ... input.json > tmp.json && mv tmp.json input.json

这可行，但我需要过滤我的文件，添加一些数据，然后将其放回原处。（即更新文件中的特定对象）

我的文件包含 1000 多个具有 不同 Element 的对象。我将始终在 Element 上使用过滤器，我缩短了问题。我有一个示例文件 original.json ...

{
  "Element": "acton",
  "objectName": "contacts",
  "Path": "/contacts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "optouts",
  "Path": "/optouts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "subscriptionTypes",
  "Path": "/subscription-types",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}

我想按 objectName 过滤 contacts 添加一些数据到空 IBM 字段并保存到文件

应用相同的逻辑将包含 "objectName": "contacts"

的对象的 IBM 字段就地编辑为 "Y"

jq 'select(.objectName == "contacts") | .IBM = "Y"' original.json > tmpjson.json && mv tmpjson.json original.json

现在我的文件 original.json 显示

{
  "Element": "acton",
  "objectName": "contacts",
  "Path": "/contacts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "Y",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}

预期结果

{
  "Element": "acton",
  "objectName": "contacts",
  "Path": "/contacts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "Y",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "optouts",
  "Path": "/optouts",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}
{
  "Element": "acton",
  "objectName": "subscriptionTypes",
  "Path": "/subscription-types",
  "Scenario": "",
  "serviceLevel": "",
  "IBM": "",
  "Dependency": "",
  "Gap": "",
  "clientPhase": "",
  "parentPhase": "",
  "existsToday": ""
}

使用select后好像不能再使用提供的解决方案https://github.com/stedolan/jq/wiki/FAQ#general-questions

Answer 1

您的 jq 过滤器不是您需要的过滤器，因为 select 选择。即过滤掉不符合选择条件的对象。

这个 jq 过滤器应该做你想做的事：

if (.objectName == "contacts") then .IBM = "Y" else . end

至于覆盖文件，许多有权访问 sponge（CLI 实用程序 moreutils 集合的一部分）的人都在使用它，例如

jq 'if (.objectName == "contacts") then .IBM = "Y" else . end' input.json |
  sponge input.json

使用 JQ 后就地编辑文件 Select

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