or you are absolutely sure you want to use AFP for file sharing. You should follow the steps in the following article only if you want to setup a Mac with an OS X version below 10.9. On Ubuntu, the Samba package can be easily installed and configured to provide connectivity between Ubuntu und Mac OS X out of the box. Apple uses v2 of the Samba protocol, dubbed SMB2 for file sharing by default now, which includes many technical advantages over AFP.
This article is very old and has been rendered obsolete for OS X 10.9 Mavericks and above.
