How to set up PHPCS with CakePHP coding standard on Ubuntu

Install required package

sudo apt-get install php-codesniffer

Install the CakePHP Coding Standard

sudo pear channel-discover pear.cakephp.org
sudo pear install cakephp/CakePHP_CodeSniffer

Usage

cd /var/repos
cd <your-repo>
phpcs app -p --extensions=php --standard=CakePHP