See:

https://www.drupal.org/docs/8/core/modules/rest/3-post-for-creating-content-entities

Back in the (D7) day you could flip modules on and off. Drupal 8 does away with this feature. Now, to disable a module, you have to uninstall it. 

Here the current Drupal 8 way to disable a module:
../vendor/drush/drush/drush pm:uninstall better_search

{path_to_Drush} {command} {module_name}

<?php
echo '<script type="text/javascript">
           window.location = "http://some-random-website.org/"
      </script>';
?>

sudo apt-get update
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:certbot/certbot
sudo apt-get update
sudo apt-get install python-certbot-apache
sudo certbot --apache

OS: Ubuntu 16.04.4 LTS

PHP Composer Setup
See: https://www.digitalocean.com/community/tutorials/how-to-install-and-use-composer-on-ubuntu-16-04