I know that with
bin/magento setup:static-content:deploy en_US en_GB I can generate the static content for the above two locales.
How can I look up which locales are actively being used by a store (Imagine someone gave you ssh logins to a store you don't know which locales are used)?
So effectively I am looking for
command XXX which should produce
en_US en_GB (ideally something that is supported on 2.1)