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Extract a single field from JSON with jq

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Adjust the values, the command updates live
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jq -r '.require.php' composer.json

Prints the value at the given path. Nested fields are joined with dots, array elements are accessed with .[0]. The -r option returns strings without quotes, so the result can be used directly in scripts. If the field does not exist, jq prints null.

Note: The filter '.require | keys[]' lists all keys of an object.

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