f3 Fight Flash Fraud: "f3probe command not found" Mac OS Mojave
brew install f3 installs the two commands f3read and f3write into /usr/local/bin (but no f3probe).

From the README:

    make extra

.. note::
   - The extra applications are only compiled and tested on Linux
     platform.
   - Please do not e-mail me saying that you want the extra
     applications to run on your platform; I already know that.
   - If you want the extra applications to run on your platform, help
     to port them, or find someone that can port them for you. If you
     do port any of them, please send me a patch to help others.
   - The extra applications are f3probe, f3brew, and f3fix.