Add/modify element for each object in array using jq

Question

How can I add, or modify if the element already exists, an element for each object in an array using jq?

For example going from:

[
    {
        "firstname": "Sophie",
        "lastname": "Haydock"
    },
    {
        "firstname": "Toussaint",
        "lastname": "Louverture"
    }
]

to

[
    {
        "firstname": "Sophie",
        "lastname": "Haydock",
        "common": "something"
    },
    {
        "firstname": "Toussaint",
        "lastname": "Louverture",
        "common": "something"
    }
]

This is different from the question marked as duplicate in that it adds an element to an object in an array rather than add an object to an array.

score 3 · Accepted Answer · answered Oct 03 '19 at 22:56

3

To do something with each element in an array, use map:

jq 'map(.common="something")'

answered Oct 03 '19 at 22:56

that other guy

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Add/modify element for each object in array using jq

1 Answers1