Thanks so much for the help,
I was able to change my shell to bash - thanks for catching that oversite. I re-ran the install commands
cd
curl -O https://afni.nimh.nih.gov/pub/dist/bin/misc/@update.afni.binaries
sudo tcsh @update.afni.binaries -package macos_10.12_local -do_extras
and the code to set up environment variables for AFNI and SUMA, but I still receive the same error
cp $HOME/abin/AFNI.afnirc $HOME/.afnirc
suma -update_env
-bash: suma: command not found
Any other suggestions to explore?
Thanks again,
Amy