Use PHP CodeSniffer on only changed files

README.MD

• Follow instructions at https://www.drupal.org/node/1419988 to install PHPCS using composer (do it globally)
• Save git-cs to a location in your current path (echo $PATH); I used /usr/local/sbin
• Update permissions: chmod u+x /usr/local/sbin/git-cs
• From your project directory, run git-cs to test changed files against Drupal coding standard

@todo - It would be nice to have this in a pre-commit hook so it's automatically run before a commit is made.

git-cs

#!/bin/bash

files=$(git ls-files -om --exclude-standard)

phpcs --standard=DrupalPractice $files