WP CLI: Add/Update Users in Multisite

Adding and updating users in a WordPress Multisite is actually pretty simple through WP CLI.

Yet I often forget what the command is, and the official examples sometimes are lacking, so here's a note-to-self:

wp user create my_username [email protected] --url=multisite-domain.com --role=administrator

To add a user to a sub-site in multisite:

wp user update my_username --url=other-multisite.com --role=administator

Hopefully that saves me 3 minutes next time ?