Installation de Drush avec Composer

Installation de Composer

https://getcomposer.org/download/

cd /usr/local/bin
php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
php -r "if (hash_file('SHA384', 'composer-setup.php') === '544e09ee996cdf60ece3804abc52599c22b1f40f4323403c44d44fdfdd586475ca9813a858088ffbc1f233e9b180f061') { echo 'Installer verified'; } else { echo 'Installer corrupt'; unlink('composer-setup.php'); } echo PHP_EOL;"
​php composer-setup.php php -r "unlink('composer-setup.php');"
​mv composer.phar composer
chmod +x composer
cd /root
vim .bashrc
export PATH="$HOME/.composer/vendor/bin:$PATH"
source .bashrc

Installation de Drush 8 / 9

composer global require drush/drush:8.*
composer global require drush/drush:9.*
/root/.composer/vendor/bin/drush init
[OR]
drush init
drush --help

Update Composer

composer global update

Download Drupal Core

drush dl drupal