/* Manual Configuration */
#open the /etc/network/interfaces file
` vim /etc/network/interfaces`
#add
iface enp0s3 inet static
address `your ip 10.0.1.20/24`
gateway '10.0.1.1`
dns-nameservers 8.8.8.8
#restart the server to apply changes
`sudo systemctl restart`
#verify
`ip a`
`ping google.com`