Recursive search values by key

Question

I have a JSON like this:

{ 
  \"A\": { \"error\": null },
  \"B\": { \"C\": {\"error\": \"error string\"}},
  \"C\": { \"D\": {\"error\": null}},
  \"D\": {          


        

Answer 1

Use .. to iterate recursively, and get all the .error values. If they're null, remove them:

jq '.. | .error? // empty'

Alternatively, instead of using empty you can select the elements that are strings with strings:

jq '.. | .error? | strings'