### If you have a subscription $ sudo su # URL=https://serial:@download.kopano.io/supported/webapp:/final/Ubuntu_18.04/ # echo "deb $URL /">> /etc/apt/sources.list.d/kopano-webapp.list # curl $URL/Release.key | apt-key add - # apt install kopano-webapp # exit ### If you have the Community Packages $ wget https://download.kopano.io/community/webapp%3A/webapp-4.2.2860%2B1697.1.12a4e21-Ubuntu_18.04-all.tar.gz $ tar xfz webapp-4.2.2860+1697.1.12a4e21-Ubuntu_18.04-all.tar.gz $ cd webapp-4.2.2860+1697.1.12a4e21-Ubuntu_18.04-all $ sudo dpkg -i *.deb ### If dependencies cannot be resolved: $ sudo apt install -f