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JQ: Case-insensitive search for keys containing string
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jq-case-insensitive.md

Search for keys in JSON at any level containing the supplied string and strips out any empty results

cat some-json |  jq -c '.. | objects | with_entries(select(.key |match("SEARCH-STRING";"i"))) | select(. != {})'

For instance, to list any keys that contain the word public from a list of AWS instances :

aws ec2 describe-instances --output json | jq -c '.. | objects | with_entries(select(.key |match("public";"i"))) | select(. != {})'

Outputs:

{"PublicDnsName":"xxxxx.compute-1.amazonaws.com","PublicIpAddress":"xx.xx.xx.xx"}
{"PublicDnsName":"xxxxx.compute-1.amazonaws.com","PublicIp":"xx.xx.xx.xx"}
{"PublicDnsName":"xxxxx.amazonaws.com","PublicIp":"xx.xx.xx.xx"}
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