fuzzylite software package provides fuzzy logic control binary, you can install in your Debian 9 (Stretch) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install fuzzylite
fuzzylite is installed in your system.
Make ensure the fuzzylite package were installed using the commands given below,
$ sudo dpkg-query -l | grep fuzzylite *
You will get with fuzzylite package name, version, architecture and description in a table
| Distro | Debian 9 stretch |
| Section | Miscellaneous |
| Package | fuzzylite |
| Version | 5.1+dfsg-3.1 |
| Description | fuzzy logic control binary |
| Sub Section | Miscellaneous |