Hello, @galiaskaruli

What you can do is to download the owncloud package from their website using wget :

cd /usr/src
wget https://download.owncloud.org/community/owncloud-10.4.1.zip
unzip owncloud-10.4.1.zip
sudo mv owncloud /var/www/owncloud
sudo chown -R www-data:www-data /var/www/owncloud/
sudo chmod -R 755 /var/www/owncloud/

You can then follow the tutorial and adjust the Apache configuration file.

Hope that this helps!

Regards,
Alex