Question

我试图在下面的Cloudformation参数文件中用ParameterValue：test替换项目ParameterKey：Project

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我正在尝试执行以下jq命令

    [{
  "ParameterKey": "Project",
  "ParameterValue": "<changeMe>"
 }, 
 {
  "ParameterKey": "DockerInstanceType",
  "ParameterValue": "m3.medium"
}]

我遇到以下错误

cat config.json |              
  jq "map(if .ParameterKey == "Project"
          then . + {\"ParameterValue\":\"test\"}
          else .
          end)" > populated_config.json

Answer 1

您要过早关闭传递给jq的字符串，方法是不要在等号中转义“ Project”的引号。

您可以通过将表达式用单引号引起来来简化，而不必进行转义：

$ cat config.json | jq 'map(if .ParameterKey == "Project" then . + {"ParameterValue":"test"} else . end)'
[
  {
    "ParameterKey": "Project",
    "ParameterValue": "test"
  },
  {
    "ParameterKey": "DockerInstanceType",
    "ParameterValue": "m3.medium"
  }
]

使用jq代替云形成参数值

1 个答案: