$ wget https://download.kopano.io/community/core%3A/core-10.0.6.349.8669778-Ubuntu_18.04-amd64.tar.gz $ tar xfz core-10.0.6.349.8669778-Ubuntu_18.04-amd64.tar.gz $ cd core-10.0.6.349.8669778-Ubuntu_18.04-amd64 $ sudo dpkg -i *.deb ### If apt fails to resolve dependencies: $ sudo apt install -f