First, add the partner repository:
sudo add-apt-repository "deb http://archive.canonical.com/ oneiric partner"
sudo apt-get update
Then install the application itself:
sudo apt-get install centrifydc
After installation, join the system to AD:
sudo adjoin -w domain.name
where domain.name is the name of our domain in AD.
Note: you need the AD administrator password to run this command. To specify execution as a different user, use the -u (--user) option. See man adjoin for more details.
To check the status, simply run the adinfo command. If successful, the output will look something like this:
user@ubuntu:~$ adinfo