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Questions - jq

How can I fetch the value of a key-value pair in a JSON using shell script

How can I fetch the value of a key-value pair in a JSON using shell script I do not know the positions of key-value pairs in the JSON, I will have to search and get the value of the key-value pair. { ...
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Raghunath Dhara

arrays

json

bash

shell

jq

Votes: 0

Answers: 2

Latest Answer

JSON objects do not have a position (well, they have in the written-out file but another order would be considered equal). Arrays do have an order. The city field is located within the address field ...
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pmf

Converting a list of objects to an array

Given I have a list of objects: { "alpha": { "bytes": { "value": 4789440 }, "doc_count": 7723 }, "beta": { "bytes&quo...
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sontags

arrays

json

jq

Votes: 0

Answers: 2

Latest Answer

Using to_entries would be one way. By accessing .key and .value, the composition would be: jq '[to_entries[] | {key} + .value]' input.json [ { "key": "alpha", "byte...
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pmf

Batch add keys into JSON files in a directory based on condition

I am looking for a way to batch add keys to all JSON file in a directory preferably with command line tools. Files: /config$ ls 166bbdd41c0297755ddb645db2b4c865 46a5c83d30483acba49a542a1ade9c33 87b2...
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Bohumír Mäsiar

json

bash

shell

jq

Votes: 0

Answers: 3

Latest Answer

A simple if … then … else … end might do: jq --arg q "b4fd044b9a7ab1146bb638ea42219b99" --arg n "NEWVALUETOADD" ' if IN(.tags[]; $q) and (IN(.services[]; $n) | not) then .servi...
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pmf

jq update substring matched object

Json file: { "A": "jack", "B": [ { "name": "jack/jil", "version": "0.1" }, { "name": &...
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Subhadip Banerjee

string

bash

jq

Votes: 0

Answers: 1

Latest Answer

You need to put parantheses around the whole selection to be updated: (… | .version) += … jq '(.B[] | select(.name|test("jack.")) | .version) += "-dev"' old.json > new.json { ...
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pmf

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