How can I know if I run emacs or aquamacs at the .emacs file?

Question

I want to make different environment between Cocoa emacs and Aquamacs. They both read ~/.emacs, so I tried something like this.

(unless (symbolp 'aquamacs-version)
; code for emacs
)

But it doesn't seem to work.

How can I know if I run emacs or aquamacs?

Answer 1

I'd try (boundp 'aquamacs-version).