I downloaded ROOT program https://root.cern.ch/downloading-root
At the end of this page, it says
Basically it is enough to use a special script distributed with ROOT:
<pathname> is the location where you unpacked the ROOT distribution.
Typically add these lines to your
For my mac, .<pathname>/root/bin/thisroot.sh needs to be added to the .profile or .login files
However, I was not able to find these files.