wp post meta
Adds, updates, deletes, and lists post custom fields.
Examples
# Set post meta
$ wp post meta set 123 _wp_page_template about.php
Success: Updated custom field '_wp_page_template'.
# Get post meta
$ wp post meta get 123 _wp_page_template
about.php
# Update post meta
$ wp post meta update 123 _wp_page_template contact.php
Success: Updated custom field '_wp_page_template'.
# Delete post meta
$ wp post meta delete 123 _wp_page_template
Success: Deleted custom field.