The SICP page recommends MIT scheme,
so that is what we will use
to install it, on Apple OSX using Homebrew:
brew tap x11
brew cask install xquartz
brew install mit-scheme
brew install with-readline
you will see /usr/local/bin/scheme
linked to mit-scheme under Homebrew's cellar
can run with-readline scheme
to get a basic REPL with readline support.
the CLI did not respond to `-?' or other variations.
so see the help for details.
if interested see an-opinionated-guide-to-scheme-implementations by the author of Guile
the file extension for scheme is scm
opening a scm
file in emacs should give the scheme
mode by default
can type M-x run-scheme
to run a scheme process. emacs buffer is named *scheme*
can type C-c C-l
to load a file inside the emacs *scheme*
buffer
emacs has other scheme modes see alexott.net and emacswiki for more details