To install the DEB:
# apt-get install ./sfptpd_<version>_amd64.deb
...
Suggested packages:
ntpsec | ntp
Recommended packages:
sfptpd-python3
The following NEW packages will be installed:
sfptpd ...
...
Do you want to continue? [Y/n] y
...
Selecting previously unselected package sfptpd.
Preparing to unpack .../sfptpd_<version>_amd64.deb ...
Unpacking sfptpd (<version>) ...
Setting up sfptpd (<version>) ...
...
A default systemd
UNIT file is installed at:
/usr/lib/systemd/service/sfptpd.service
A default configuration file is installed at:
/etc/sfptpd.conf
You can edit the UNIT file or configuration file or replace the configuration with another. See the provided examples.