The following commands are one possible way to quickly prepare an instance of Ubuntu 18.04 for Uno.
#install stuff sudo apt install openjdk-11-jdk maven git openssh-server wget libxml2-utils make g++ libsnappy1v5 #setup passwordless ssh ssh-keygen -t rsa -N '' -f ~/.ssh/id_rsa ssh-keyscan -H localhost >> ~/.ssh/known_hosts cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys #add java home before interactive section, will take effect on shell restart #this may not work properly in your environment, looks for phrase in stock ubuntu .bashrc sed -i '/# for examples/a export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64' ~/.bashrc #set java home in current shell export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-amd64 # Optional: set OS limits. Could do this with an editor. Could replace * with user running Uno. cat <<EOF | sudo tee -a /etc/security/limits.conf > /dev/null * hard nproc 65536 * soft nproc 65536 * hard nofile 65536 * soft nofile 65536 EOF