Other People's Code is handy for making directory hard-links in OSX. Shamelessly cribbed from StackOverflow: http://stackoverflow.com/questions/1432540

Usage (assuming ~/bin is in your PATH):

gcc -o hln hln.c gcc -o hunlink hunlink.c mv hln ~/bin mv hunlink ~/bin

hln /some/dir ~/linked_dir

Now your computer thinks those are exactly the same directory! Cool. But don't delete linked_dir or it'll also delete /some/dir. That's what hunlink is for:

hunlink ~/linked_dir

Neato.