Reducing JSON with jq
To expand on the other two answers a bit, you can "add" two objects together like this:
.[0] + .[1]=> { "key1": "value", "key2": "value" }You can use the generic reduce function to repeatedly apply a function between the first two items of a list, then between that result and the next item, and so on:
reduce .[] as $item ({}; . + $item)We start with {}, add .[0], then add .[1] etc.
Finally, as a convenience, jq has an add function which is essentially an alias for exactly this function, so you can write the whole thing as:
addOr, as a complete command line:
jq add myjson.json