I downloaded and installed the SML NJ implementation using the DMG for x86 from here : http://smlnj.cs.uchicago.edu/dist/working/110.72/index.html
However when I open a terminal window and go to /usr/local/smlnj-110.72/bin and run sml i get a bash command not found. I am not very familiar with UNIX so I guess I am doing something wrong.
Thanks for the help!