Cheatsheet Pages / jq Cheatsheet
How to count things in JSON with jq — length
How many users are in the array? How long is that string? How many keys does the object have?
Every filter was executed against the cheatsheet's sample config.json with jq 1.7 before publishing; the sample file sits at the bottom of the cheatsheet so you can reproduce every output.
jq '.users | length' config.json # -> 3
jq '.name | length' config.json # -> 10 (characters in "api-server")