Jq json file manipulation

viewing the top level structure for all objects

jq '.[]|keys' filename

viewing the top level structure for the first object

jq '.[0]|keys' filename

viewing the top level structure for the third object

jq '.[2]|keys' filename

viewing the first key for the first object

jq '.[0] |  keys | .[0] filename

selecting a specific item (from the top level)

jq '.[] | select(.id=bla)' filename

getting specific data from a subkey

jq '.[].data.category.name' filename | sort -u