I’ve created Ansible’s Ubuntu PPA at https://launchpad.net/~rquillo/+archive/ansible

Might help others who are using Ubuntu distro.
Using Ubuntu Precise as overlord machine, you can install Ansible using the PPA with the commands:

 

 $ sudo add-apt-repository ppa:rquillo/ansible 
 $ sudo apt-get update
 $ sudo apt-get install ansible -y  
 $ echo localhost > myhosts 
 $ export  ANSIBLE_HOSTS=$(pwd)/myhosts 
 
 $ ansible all -m ping -u ubuntu

There you go! Happy Ansibling Ubuntu users!