Drupal

Drupal is a free, open-source content management system (CMS) with a large, supportive community. It’s used by millions of people and organizations around the globe to build and maintain their websites.

www.drupal.org/

How to check Drupal version from the terminal

First go into your application folder and check the following files:

Drupal 8 & Drupal 9

grep VERSION core/lib/Drupal.php

Drupal 7

grep VERSION includes/bootstrap.inc

Drupal 6 and older

grep VERSION modules/system/system.module