Creating the file as described in #2 did not help in my case. I had to:
sudo ln -s /usr/share/hplip/sendfax.py /usr/bin/hp-sendfax
Creating the file as described in #2 did not help in my case. I had to:
sudo ln -s /usr/share/ hplip/sendfax. py /usr/bin/hp-sendfax