I think they mean without setting up a VCS server. You still need for the 2 machines to be able to access each other somehow, usually ssh (which is technically

I think they mean without setting up a VCS server. You still need for the 2 machines to be able to access each other somehow, usually ssh (which is technically a server), or a file server (NFS, samba, which is also technically a server), but, many people have one or both of those running already running. If so it's just git clone ssh://name@addressOrNameOfMachine/path/to/repo or git clone path/to/shared/folder etc...