Checking for modifications to default.settings.php
Drupal sites contain a settings.php file with site-specific settings, that is based off default.settings.php at the time the site is installed. As Drupal evolves, default.settings.php will change. Sometimes, it's worth incorporating those changes into the settings.php file for an already-installed site. This post runs through a low-friction way to keep on top of this house-keeping.