Installing via deb-packagee

1. Download the .deb package.
2. Open it with the package installer or run in Terminal:

sudo dpkg -i staffcounter.deb

After installation, restart the computer — the StaffCounter Agent will launch automatically.

For Ubuntu 20:
Before installing, update the system:

sudo apt update  
sudo apt upgrade

Then install the .deb package with the package installer (double-click).