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Ubuntu/Debian Network Configuration with nmcli

Show devices and connections​

nmcli device status
nmcli connection show

Replace "Wired connection 1" with the actual connection name. If no Ethernet connection exists, create one first:

sudo nmcli connection add con-name "eth0-static" ifname eth0 type ethernet

Use DHCP on Ethernet​

sudo nmcli connection modify "Wired connection 1" ipv4.method auto
sudo nmcli connection up "Wired connection 1"

Set a static Ethernet address​

sudo nmcli connection modify "Wired connection 1" \
  ipv4.method manual \
  ipv4.addresses 192.168.1.100/24 \
  ipv4.gateway 192.168.1.1 \
  ipv4.dns "8.8.8.8 114.114.114.114"
sudo nmcli connection up "Wired connection 1"

Connect to Wi-Fi with DHCP​

sudo nmcli radio wifi on
nmcli device wifi list
sudo nmcli device wifi connect "SSID" password "PASSWORD"

Set a static address for an existing Wi-Fi connection​

sudo nmcli connection modify "SSID" \
  ipv4.method manual \
  ipv4.addresses 192.168.1.101/24 \
  ipv4.gateway 192.168.1.1 \
  ipv4.dns "8.8.8.8 114.114.114.114"
sudo nmcli connection up "SSID"