在运行时替换json中的值 [英] Replace value in json during run time

问题描述

我正在尝试在运行时替换json中的值，即

I am trying to replace value on run time in json i.e.

旧

{
  "containerDefinitions": [{
    "name": "containername",
    "image": "myimage",
    "memory": 512,
    "cpu": 1,
    "essential": true,
    "portMappings": [{
      "hostPort": 80,
      "containerPort": 80,
      "protocol": "tcp"
    }]
  }],
  "volumes": [],
  "family": "containername"
}

新的应该是

{
  "containerDefinitions": [{
    "name": "containername",
    "image": "new image",
    "memory": 512,
    "cpu": 1,
    "essential": true,
    "portMappings": [{
      "hostPort": 80,
      "containerPort": 80,
      "protocol": "tcp"
    }]
  }],
  "volumes": [],
  "family": "containername"
}

• 旧值:-"image":"myimage"
• 新值:-图片":新图片"

我想用bash做.有什么最好的办法吗?我们可以通过jq做吗?

I want to do in bash. Is there any best way to do? Can we do through jq?

推荐答案

您可以为此使用jq:

jq '.containerDefinitions[].image="new image"' old.son

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