Display site UUID from module

Question

Is it possible to display the site UUID on a Drupal 8 module?

Answer 1

"display" is pretty ambiguous, but you can get the site UUID like so:

$uuid = \Drupal::config('system.site')->get('uuid');

(depending on context, injecting the config.factory service would be preferable)

It's a string so rendering it will be easy.

Answer 2

for you Drupal 8 site

drush config-get "system.site" uuid

or if you need to change it

drush config-get "system.site" uuid "number you want"