How to configure static IP address on Ubuntu 18.10 Cosmic Cuttlefish Linux - LinuxConfig.org

The objective is to configure static IP address on Ubuntu 18.10 Cosmic Cuttlefish Linux
This is a companion discussion topic for the original entry at https://linuxconfig.org/how-to-configure-static-ip-address-on-ubuntu-18-10-cosmic-cuttlefish-linux