jsonをCLIで整形して見やすくする

環境

macOS 10.12.6

前提

例えばこのような整形されてない1行のjsonがあったとする

{"_id":"5b741173880fca45bc090db0","index":0,"guid":"bf4b9d4b-4016-4ac3-aca0-5202b1f714cc","isActive":false,"balance":"$2,379.87","picture":"http://placehold.it/32x32","age":39,"eyeColor":"blue","name":"Wynn Ramos","gender":"male","company":"UNI","email":"[e-mail]","phone":"[phone]","address":"518 Martense Street, Bloomington, New Jersey, 7440"}

自分の場合、Android StudioのLogcatに出力された1行のjsonを整形して確認したい事があった

AtomやVScodeのJson整形プラグインを使ってもいいが、CLIでやってみる。

方法1 jq

ターミナルで以下コマンドにjsonを貼り付けて実行

jq . <<< 'ここにjson'

実際にやってみる

jq . <<< '{"_id":"5b741173880fca45bc090db0","index":0,"guid":"bf4b9d4b-4016-4ac3-aca0-5202b1f714cc","isActive":false,"balance":"$2,379.87","picture":"http://placehold.it/32x32","age":39,"eyeColor":"blue","name":"Wynn Ramos","gender":"male","company":"UNI","email":"[e-mail]","phone":"[phone]","address":"518 Martense Street, Bloomington, New Jersey, 7440"}'

このように整形されて表示される

{
  "_id": "5b741173880fca45bc090db0",
  "index": 0,
  "guid": "bf4b9d4b-4016-4ac3-aca0-5202b1f714cc",
  "isActive": false,
  "balance": "$2,379.87",
  "picture": "http://placehold.it/32x32",
  "age": 39,
  "eyeColor": "blue",
  "name": "Wynn Ramos",
  "gender": "male",
  "company": "UNI",
  "email": "[e-mail]",
  "phone": "[phone]",
  "address": "518 Martense Street, Bloomington, New Jersey, 7440"
}

出力結果もカラーリングされて見やすいのが素晴らしい

<<<とは

bashのヒアストリングという手法らしい

単コマンドへ文字列を渡す事ができるようだ

方法2 python

macなら最初からpythonが入ってるしね

echo 'ここにjson' | python -m json.tool

echo '{"_id":"5b741173880fca45bc090db0","index":0,"guid":"bf4b9d4b-4016-4ac3-aca0-5202b1f714cc","isActive":false,"balance":"$2,379.87","picture":"http://placehold.it/32x32","age":39,"eyeColor":"blue","name":"Wynn Ramos","gender":"male","company":"UNI","email":"[e-mail]","phone":"[phone]","address":"518 Martense Street, Bloomington, New Jersey, 7440"}' | python -m json.tool
{
    "_id": "5b741173880fca45bc090db0",
    "index": 0,
    "guid": "bf4b9d4b-4016-4ac3-aca0-5202b1f714cc",
    "isActive": false,
    "balance": "$2,379.87",
    "picture": "http://placehold.it/32x32",
    "age": 39,
    "eyeColor": "blue",
    "name": "Wynn Ramos",
    "gender": "male",
    "company": "UNI",
    "email": "[e-mail]",
    "phone": "[phone]",
    "address": "518 Martense Street,

備考

How can I pretty-print JSON in a (Unix) shell script? - Stack Overflow https://stackoverflow.com/questions/352098/how-can-i-pretty-print-json-in-a-unix-shell-script

JSON Generator – Tool for generating random data https://www.json-generator.com/