Thanks for the info about sudo, I originally added the sudo command based on the following error that is generated during the following step
tcsh @update.afni.binaries -package macos_10.12_local -do_extras
...
++ extracting package macos_10.12_local.tgz...
++ backing up current binaries to auto_backup.macos_10.12_local
++ installing new binaries...
++ adding /Users/amy/abin to PATH in /Users/amy/.bash_profile ...
++ setting DYLD_LIBRARY_PATH in /Users/amy/.bash_profile ...
/Users/amy/.bash_profile: Permission denied.
I did go on to run the commands you recommended and the outputs are shown here
which afni
[no output]
which suma
[no output]
afni_system_check.py -check_all
-bash: afni_system_check.py: command not found
Thanks,
Amy