Zentyal

To install zentyal on Ubuntu 12.04 LTS add repository

echo "deb http://ppa.launchpad.net/zentyal/2.3/ubuntu precise main" >> /etc/apt/sources.list

Install the key

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 10E239FF

install following package

apt-get install python-software-properties -y

add the software to repository

sudo add-apt-repository ppa:zentyal/2.3

add extra repository for zarfar module

echo "deb http://archive.zentyal.com/zentyal 2.2 extra" >> /etc/apt/sources.list

update the repository

apt-get update

install zentyal

sudo apt-get install zentyal