linux - 如何使用shell脚本将json对象添加到json文件

Question

json文件如下:

{"name" :"sam",
"age":23,
"designation":"doctor"}

现在我想使用 bash 脚本在文件末尾添加另一个 json 对象 {"location":"canada"}我试过 echo "{"location":"canada"}">>sample.json

但是结果

{"name" :"sam",
"age":23,
"designation":"doctor"} {location:canada}

但我希望它是这样的

{"name" :"sam",
"age":23,
"designation":"doctor", 
"location":"canada"}

请推荐我

Answer 1

要合并两个 json 对象，您可以使用 jq command-line utility :

$ jq -s add sample.json another.json

输出:

{
  "name": "sam",
  "age": 23,
  "designation": "doctor",
  "location": "canada"
}

更新单个属性:

$ jq '.location="canada"' sample.json

它产生相同的输出。

将 "doctor" 添加到位置:

$ jq '.location = "doctor" + .location' input.json

输出:

{
  "name": "sam",
  "age": 23,
  "designation": "doctor",
  "location": "doctorcanada"
}