如何在 Linux 中使用特定值 grep JSON 记录

Question

假设我在同一个文件中有这个：

{
  "city": "NY",
  "car": "ford",
  "whatever": "whatever",
  "whatever": "whatever",
  "day": "friday",
  "mood": "good",
  "whatever": "whatever",
  "whatever": "whatever",
}
{
  "whatever": "whatever",
  "city": "NY",
  "car": "ford",
  "day": "monday",
  "whatever": "whatever",
  "whatever": "whatever",
  "whatever": "whatever",
  "mood": "good",
  "whatever": "whatever",
}

我怎样才能只用 grep 搜索我有 "day": "monday" 的那条记录？ 我实际上已经尝试了很多不同的方法，例如grep -Po '{[^*]+\n.+day\": \"monday.+[^*]}' 所以最终我想得到这个：

{
  "whatever": "whatever",
  "city": "NY",
  "car": "ford",
  "day": "monday",
  "whatever": "whatever",
  "whatever": "whatever",
  "whatever": "whatever",
  "mood": "good",
  "whatever": "whatever",
}

Answer 1

尝试使用jq解析JSON文件，例如有这个文件：

[{
    "city": "NY",
    "car": "ford",
    "whatever": "whatever",
    "day": "friday",
    "mood": "good"
}, {
    "whatever": "whatever",
    "city": "NY",
    "car": "ford",
    "day": "monday",
    "mood": "good"
}]

如果您只想获取日期等于星期一的字典：

jq '.[] |  select(.day | contains("monday"))' file.json

它会返回：

{
  "whatever": "whatever",
  "city": "NY",
  "car": "ford",
  "day": "monday",
  "mood": "good"
}