Assuming there is a new field requiring a change on a content type. How do you ensure the changes apply in the next deployment? There are a couple of ways to achieve this... depending on whether a custom module exists or not.  I'll focus on using Drush. Drush is a great tool to manage many of Drupal's features.  For changes that are applied within the backend, best to use Drush export command - drush cex.  Then your config directory at root will be updated with the change....

Creating a bash script Bash scripts are files containing code that tell your computer to do something.  In this instance, I want to rename a batch files in a directory.  Such as changing:   37351001 - BlueSpotted.jpg 37351008 -SpangledEmporer _ 0133A.jpg 37353003 -Black-Bream_3481 .jpg 37353004   -35 - Yellowfin.jpgInstead having these files appear as: 37351001.jpg 37351008.jpg 37353003.jpg 37353004.jpgHowever, I don't have four files.  Wouldn't be worth my time...