Field Update

Fieldupdate module update all old / existing node with a default value. This module is helpful if there are lots of nodes in our content type and you add a new field with this content type, so we need to update all existing nodes with default values.
Note: D7 module is not compatible with date, image, and file type fields.

HOW TO USE:
1. Install your module as usual. See more details on:
https://drupal.org/documentation/install/modules-themes/modules-7
2. Go to /admin/structure/types/manage//fields and edit the field that you want to update.
3. Enable the check box under the default value.

Drupal 9 and later version

1. Install your module as usual.
2. Open module config or go to /admin/config/content/fieldupdate
3. Select the field for update followed by Entity type and Bundle.
4. Perform update action.

Update features in Drupal 9 onwards-
Entity type: Node, Taxonomy, User
Field support: All major field types are supported.