$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.4 LTS
Release:        14.04
Codename:       trusty
$ sudo vim /etc/apt/sources.list
deb http://dl.ajaxplorer.info/repos/apt stable main
deb-src http://dl.ajaxplorer.info/repos/apt stable main
$ sudo wget -O - http://dl.ajaxplorer.info/repos/charles@ajaxplorer.info.gpg.key | sudo apt-key add -
$ sudo apt-get update
$ sudo apt-get install pydio
$ sudo chown -R www-data:www-data /usr/share/pydio/
$ sudo cp /usr/share/doc/pydio/apache2.sample.conf /etc/apache2/sites-enabled/00-pydio.conf
$ sudo ln -s /etc/php5/mods-available/mcrypt.ini /etc/php5/apache2/conf.d/20-mcrypt.ini
$ sudo apt-get install mysql-server php5-mysql
mysql -u root -p
mysql> create database pydio;
mysql> grant all on pydio.* to 'pydiouser'@'localhost' identified by 'password';
mysql> FLUSH PRIVILEGES;
mysql> exit;
$ sudo service apache2 restart