I'm following this guide to set up Home Assistant on HASSbian on a Raspberry Pi 3. Then it throws this at me:
If you’re on Debian or Ubuntu, you might have to install the packages for arp and nmap. Do so by running $ sudo apt-get install net-tools nmap. On a Fedora host run $ sudo dnf -y install nmap.
How do I know which one I'm on? I can't remember having come across any of these names during the process so far.