【jq】JSON と ndjson の変換

JSON から ndjson への変換

data.json

[
  {
    "id": 111,
    "value1": "aaa"
  },
  {
    "id": 222,
    "value1": "bbb"
  }
]

変換

jq -c '.[]' data.json

結果

{"id":111,"value1":"aaa"}
{"id":222,"value1":"bbb"}

ndjson から JSON への変換

data.ndjson

{"id":111,"value1":"aaa"}
{"id":222,"value1":"bbb"}

変換

jq -s '.' data.ndjson

結果

[
  {
    "id": 111,
    "value1": "aaa"
  },
  {
    "id": 222,
    "value1": "bbb"
  }
]

参考

jq Manual (development version)
https://stedolan.github.io/jq/manual/#Invokingjq