0 Upgrade ownCloud 8.2

Upgrade 8.2  - 9.0

         
apt-get update
apt-cache policy owncloud
      Installed: 8.2.2-2.1
         --> Candidate: 9.0.0-1.1

sudo apt-get install owncloud

cd /var/www/owncloud/

sudo -u www-data php occ upgrade --skip-migration-test

sudo -u www-data php occ maintenance:mode --off 

{ 
sudo chown -R www-data:www-data /var/www ; 
sudo chmod -R g+rw /var/www ; 
sudo service apache2 restart ;
}

sudo -u www-data php console.php files:scan --all

sudo nano /etc/apache2/sites-enabled/000-default.conf
   Fix : DocumentRoot /var/www/owncloud