To check the IP address :

root@gcloud:~# ip -br a
lo UNKNOWN 127.0.0.1/8 ::1/128
eth0 UP 10.27.2.58/24 fe80::20c:29ff:fe7e:89c4/64
docker0 UP 172.17.0.1/16 fe80::42:6dff:fe1c:28d6/64
vethe1bf053@if4 UP fe80::d0b3:dfff:fe8b:b0aa/64

To check the MAC address :

root@gcloud:~# ip -br l
lo UNKNOWN 00:00:00:00:00:00 <LOOPBACK,UP,LOWER_UP>
eth0 UP 00:0c:29:7e:89:c4 <BROADCAST,MULTICAST,UP,LOWER_UP>
docker0 UP 02:42:6d:1c:28:d6 <BROADCAST,MULTICAST,UP,LOWER_UP>
vethe1bf053@if4 UP d2:b3:df:8b:b0:aa <BROADCAST,MULTICAST,UP,LOWER_UP>

Interface Up and Down Command :

Interface Up :

root@gcloud:~# ip link set eth0 up
root@gcloud:~# ifconfig eth0 up

Interface down:

root@gcloud:~# ip link set eth0 down
root@gcloud:~# ifconfig eth0 down

Interface Add and del Workout :

ip addr del 10.10.10.10/8 dev eth0
ip addr add 10.10.10.10/8 dev eth0

Interface restart Workout :

systemctl restart networking

Interface edit  Workout :

nano /etc/networks/interfaces