UPDATED FOR EL CAPITAN:
The best way that I’ve found was from here:
- Download either the 32-bit or 64-bit dmg file for Scheme.
- Double click the .dmg file, and you’ll get this window, in which you should drag the “MIT/GNU Scheme” file into the Applications folder.
For the 32-bit version, run this command:
sudo ln -s /Applications/MIT\:GNU\ Scheme.app/Contents/Resources /usr/local/lib/mit-scheme-i386
Then enter your administrator password, and run this command:
sudo ln -s /usr/local/lib/mit-scheme-i386/mit-scheme /usr/local/bin/scheme
For the 64-bit version, first run this command:
sudo ln -s /Applications/MIT\:GNU\ Scheme.app/Contents/Resources /usr/local/lib/mit-scheme-x86-64
Then enter your administrator password and run this command:
sudo ln -s /usr/local/lib/mit-scheme-x86-64/mit-scheme /usr/local/bin/scheme
And that’s it! Now you should be able to use MIT Scheme in your terminal by typing “scheme” into the command line: