PHP_CodeSniffer phpcs How to install PHP_CodeSniffer and to check drupal code (.module)

PHP_CodeSniffer

To install PHP_CodeSniffer and to check drupal code type the following (composer is required system-wide):

First make sure you have the composer bin dir in your PATH. The default value is ~/.composer/vendor/bin/, but you can check the value that you need to use by running:

composer global config bin-dir --absolute

echo $PATH
PATH=$PATH:~/.composer/vendor/bin/
echo $PATH
Add the following to the /home/<user>/.profile file:
export PATH="$PATH:/home/<user>/.composer/vendor/bin"

composer global require "squizlabs/php_codesniffer=*"
composer global require drupal/coder
composer global require dealerdirect/phpcodesniffer-composer-installer

phpcs -i
Above command should include DrupalPractice and Drupal in the installed coding standards list.

phpcs --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md --ignore=node_modules,bower_components,vendor /home/achraf/docker/alpha-sierra-docker/web/sites/all/modules/custom/alpha_sierra_main/theme/entity_no_title.tpl.php
phpcbf --standard=Drupal --extensions=php,module,inc,install,test,profile,theme,css,info,txt,md --ignore=node_modules,bower_components,vendor /home/achraf/docker/docker_drupal/web/modules/custom/custom_opm/custom_opm.module