 o convert "test -e" to "test -f" which seems to be more portable    - the "sh" shell on NEC SX-6 machines dies without it!
 o convert "test -e" to "test -f" which seems to be more portable
   - the "sh" shell on NEC SX-6 machines dies without it!

altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h,altMITgcm/MITgcm66h