Rename keys with entries

bash

echo '{"first_name":"Alice","last_name":"Ng"}' | jq 'to_entries | map(.key |= gsub("_"; "-")) | from_entries'

Explanation

Great for adapting between naming conventions.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Same sheet · prioritizing Entries and Key-Value Maps

Remove entries below a threshold.

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Index objects by a field.

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Group items by key and emit object buckets.

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Transform each value while keeping keys unchanged.

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Get the first element.

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Return all object values as an array.

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