Parser JSON avec JQ

**Lekno** · 23/11/2017, 16h20

Bonjour à tous, je souhaiterai parser un JSON en bash,

L'objectif étant de trouver l'élément ayant la valeur la plus élevé dans le "profitability24".
Je parviens à récupérer l'élément le plus élevé, ainsi que son identifiant dans la liste ci-dessous, mais je ne parviens pas à cibler l'élement via cet ID

Si quelqu'un sait m'indiquer comment je peux récupérer toute les informtions sur un élement ayant la valeure la plus élevé sur : profitability24

Code :

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#Je recupere tout les estimated reward sur 24h et jextrais le plus élevé
myarray=$(jq '.coins[] | .profitability24' ./coins.json | tr -d '"')
ARRAY=($myarray)
currel_max=0
selected=0
k=0
for i in ${ARRAY[*]}
do
	if test $currel_max \< "$i";then
		currel_max=$i
		selected=$k
	fi
	k=$(($k + 1))
done
#currel_max contient la valeure la plus élevé de mon tableaux
echo "$currel_max en position $selected du array (n+1 pour la liste)"

Code :

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{  
   "coins":{  
      "Metaverse":{  
         "id":209,
         "tag":"ETP",
         "algorithm":"Ethash",
         "block_time":"32.0",
         "block_reward":2.85,
         "block_reward24":2.84999999999999,
         "last_block":735942,
         "difficulty":12863182405700.0,
         "difficulty24":12985936350813.3,
         "nethash":401974450178,
         "exchange_rate":0.000478,
         "exchange_rate24":0.00044641652631579,
         "exchange_rate_vol":166.104947826329,
         "exchange_rate_curr":"BTC",
         "market_cap":"$141,062,778.41",
         "estimated_rewards":"2.23908",
         "estimated_rewards24":"2.21792",
         "btc_revenue":"0.00107028",
         "btc_revenue24":"0.00106017",
         "profitability":113,
         "profitability24":109,
         "lagging":false,
         "timestamp":1511434085
      },
      "Ethereum":{  
         "id":151,
         "tag":"ETH",
         "algorithm":"Ethash",
         "block_time":"13.7765",
         "block_reward":2.91,
         "block_reward24":2.91000000000001,
         "last_block":4606506,
         "difficulty":1.53698537894249e+15,
         "difficulty24":1.49834402729339e+15,
         "nethash":111565737229520,
         "exchange_rate":0.04941501,
         "exchange_rate24":0.0456098971428571,
         "exchange_rate_vol":7898.71459906,
         "exchange_rate_curr":"BTC",
         "market_cap":"$38,373,610,360.68",
         "estimated_rewards":"0.01914",
         "estimated_rewards24":"0.01963",
         "btc_revenue":"0.00094576",
         "btc_revenue24":"0.00097015",
         "profitability":100,
         "profitability24":100,
         "lagging":false,
         "timestamp":1511434100
      },
      "EthereumClassic":{  
         "id":162,
         "tag":"ETC",
         "algorithm":"Ethash",
         "block_time":"14.2584",
         "block_reward":4.85,
         "block_reward24":4.84999999999996,
         "last_block":4888990,
         "difficulty":118661392446502.0,
         "difficulty24":120339872092159.0,
         "nethash":8322209535887,
         "exchange_rate":0.00222754,
         "exchange_rate24":0.00217113590336135,
         "exchange_rate_vol":523.38750217,
         "exchange_rate_curr":"BTC",
         "market_cap":"$1,762,498,421.09",
         "estimated_rewards":"0.41317",
         "estimated_rewards24":"0.4074",
         "btc_revenue":"0.00092035",
         "btc_revenue24":"0.00090751",
         "profitability":97,
         "profitability24":94,
         "lagging":false,
         "timestamp":1511434100
      },
      "Nicehash-Ethash":{  
         "id":15,
         "tag":"NICEHASH",
         "algorithm":"Ethash",
         "block_time":1,
         "block_reward":1,
         "block_reward24":1,
         "last_block":0,
         "difficulty":1,
         "difficulty24":1,
         "nethash":2970180494550,
         "exchange_rate":0.0073,
         "exchange_rate24":0.0073,
         "exchange_rate_vol":23.272148727065,
         "exchange_rate_curr":"BTC",
         "market_cap":"$0.00",
         "estimated_rewards":"0.00085",
         "estimated_rewards24":"0.00085",
         "btc_revenue":"0.0008541",
         "btc_revenue24":"0.0008541",
         "profitability":90,
         "profitability24":88,
         "lagging":false,
         "timestamp":1511434152
      },
      "Musicoin":{  
         "id":178,
         "tag":"MUSIC",
         "algorithm":"Ethash",
         "block_time":"14.0",
         "block_reward":246.2,
         "block_reward24":246.199999999998,
         "last_block":1465046,
         "difficulty":4761757017160.0,
         "difficulty24":4665143102305.39,
         "nethash":340125501225,
         "exchange_rate":1.6e-06,
         "exchange_rate24":1.59831932773109e-06,
         "exchange_rate_vol":16.66860257,
         "exchange_rate_curr":"BTC",
         "market_cap":"$5,959,771.21",
         "estimated_rewards":"522.48167",
         "estimated_rewards24":"533.29833",
         "btc_revenue":"0.00083597",
         "btc_revenue24":"0.00085328",
         "profitability":88,
         "profitability24":88,
         "lagging":false,
         "timestamp":1511434082
      },
      "Ubiq":{  
         "id":173,
         "tag":"UBQ",
         "algorithm":"Ethash",
         "block_time":"87.0",
         "block_reward":8,
         "block_reward24":8.0,
         "last_block":297277,
         "difficulty":15822108736183.0,
         "difficulty24":16242338832427.6,
         "nethash":181863318806,
         "exchange_rate":0.000162,
         "exchange_rate24":0.000162110147058823,
         "exchange_rate_vol":35.0207546,
         "exchange_rate_curr":"BTC",
         "market_cap":"$51,111,773.99",
         "estimated_rewards":"5.10794",
         "estimated_rewards24":"4.97587",
         "btc_revenue":"0.00082749",
         "btc_revenue24":"0.00080609",
         "profitability":87,
         "profitability24":83,
         "lagging":false,
         "timestamp":1511434100
      },
      "Pirl":{  
         "id":211,
         "tag":"PIRL",
         "algorithm":"Ethash",
         "block_time":"14.0",
         "block_reward":10.0,
         "block_reward24":10.0,
         "last_block":335461,
         "difficulty":5683601971311.0,
         "difficulty24":6135607428330.71,
         "nethash":405971569379,
         "exchange_rate":4.8e-05,
         "exchange_rate24":4.94541596638656e-05,
         "exchange_rate_vol":4.64497169638992,
         "exchange_rate_curr":"BTC",
         "market_cap":"$1,564,363.27",
         "estimated_rewards":"17.78078",
         "estimated_rewards24":"16.47123",
         "btc_revenue":"0.00085348",
         "btc_revenue24":"0.00079062",
         "profitability":90,
         "profitability24":81,
         "lagging":false,
         "timestamp":1511434095
      },
      "Expanse":{  
         "id":154,
         "tag":"EXP",
         "algorithm":"Ethash",
         "block_time":"42.0",
         "block_reward":4.0,
         "block_reward24":4.0,
         "last_block":816354,
         "difficulty":11585690580128.0,
         "difficulty24":11253225910975.2,
         "nethash":275849775717,
         "exchange_rate":0.0002185,
         "exchange_rate24":0.000219143697478992,
         "exchange_rate_vol":24.59769884,
         "exchange_rate_curr":"BTC",
         "market_cap":"$13,988,645.11",
         "estimated_rewards":"3.48862",
         "estimated_rewards24":"3.59164",
         "btc_revenue":"0.00076226",
         "btc_revenue24":"0.00078477",
         "profitability":81,
         "profitability24":81,
         "lagging":false,
         "timestamp":1511433220
      },
      "Soilcoin":{  
         "id":189,
         "tag":"SOIL",
         "algorithm":"Ethash",
         "block_time":"55.0",
         "block_reward":3.0,
         "block_reward24":3.0,
         "last_block":3006722,
         "difficulty":68012393787.0,
         "difficulty24":68066897439.8518,
         "nethash":1236588977,
         "exchange_rate":8.1e-07,
         "exchange_rate24":8.10819327731093e-07,
         "exchange_rate_vol":0.0330886903266396,
         "exchange_rate_curr":"BTC",
         "market_cap":"$37,399.13",
         "estimated_rewards":"407.35341",
         "estimated_rewards24":"407.0554",
         "btc_revenue":"0.00032996",
         "btc_revenue24":"0.00032971",
         "profitability":35,
         "profitability24":34,
         "lagging":false,
         "timestamp":1511434096
      }
   }
}

**N_BaH** · 23/11/2017, 17h34

Bonjour,

\< n'est pas un opérateur de comparaison arithmétique (cf. help test)

récupérer toute les informtions sur un élement

c'est-à-dire ? toutes les valeurs de id, tag...timestamp ?

jq ne pourrait pas le faire, sans passer par bash ?

**BufferBob** · 25/11/2017, 02h22

salut,

Envoyé par N_BaH

jq ne pourrait pas le faire, sans passer par bash ?

si carrément, c'est même à ça que ça sert, mais j'avoue que la syntaxe est un poil rebutante

sur la base du fichier que tu donnes en exemple, un truc dans ce genre là :

Code :

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$ jq '[.coins | to_entries[]] | max_by(.value.profitability24) | {(.key): .value}' fichier.json

et le résultat :

Code :

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{
  "Metaverse": {
    "id": 209,
    "tag": "ETP",
    "algorithm": "Ethash",
    "block_time": "32.0",
    "block_reward": 2.85,
    "block_reward24": 2.84999999999999,
    "last_block": 735942,
    "difficulty": 12863182405700,
    "difficulty24": 12985936350813.3,
    "nethash": 401974450178,
    "exchange_rate": 0.000478,
    "exchange_rate24": 0.00044641652631579,
    "exchange_rate_vol": 166.104947826329,
    "exchange_rate_curr": "BTC",
    "market_cap": "$141,062,778.41",
    "estimated_rewards": "2.23908",
    "estimated_rewards24": "2.21792",
    "btc_revenue": "0.00107028",
    "btc_revenue24": "0.00106017",
    "profitability": 113,
    "profitability24": 109,
    "lagging": false,
    "timestamp": 1511434085
  }
}

ps: du coup va falloir qu'on partage les bénefs

**Lekno** · 27/11/2017, 11h59

super merci beaucoup pour les exemples

Parser JSON avec JQ

Shell et commandes GNU

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