Ubuntu 20

Install signing key

wget https://www.galil.com/sw/pub/all/crypto/GALIL-GPG-KEY-E29D0E4B.asc
sudo apt-key add GALIL-GPG-KEY-E29D0E4B.asc
rm GALIL-GPG-KEY-E29D0E4B.asc

Install repository

sudo wget -P /etc/apt/sources.list.d/ https://www.galil.com/sw/pub/ubuntu/20.04/galil.list
sudo apt-get update

Install software

sudo apt install gclib gcapsd gdk