I like to create a bin directory in my home directory and make it the first item in my $PATH. I then create symbolic links to override the default MacOS installed version of certain apps. I have done this in the past with Emacs.
BTW I also like to launch emacs from the command line so, I create an alias of 'alias e="emacs -nw"' in my .zrshrc or .profile file.
I am now on Yosemite and I can't get this working. Mind you Emacs is running when I click on the Emacs.app in Applications (in Window mode).
Here is what i get when I run the symbolic link version from the commandline:
Warning: arch-dependent data dir `/Users/build/workspace/Emacs-Multi-Build/label/mavericks/emacs-source/nextstep/Emacs.app/Contents/MacOS/libexec/': No such file or directory Warning: arch-independent data dir `/Users/build/workspace/Emacs-Multi-Build/label/mavericks/emacs-source/nextstep/Emacs.app/Contents/Resources/etc/': No such file or directory Warning: Lisp directory `/Users/build/workspace/Emacs-Multi-Build/label/mavericks/emacs-source/nextstep/Emacs.app/Contents/Resources/lisp': No such file or directory Error: charsets directory not found: /Users/build/workspace/Emacs-Multi-Build/label/mavericks/emacs-source/nextstep/Emacs.app/Contents/Resources/etc/charsets Emacs will not function correctly without the character map files. Please check your installation!