Ubuntu Linux convert DHCP network configuration to static IP configuration

vi /etc/network/interfaces

IP,NM,GW,NET,BC

iface eth0 inet staticaddress 192.168.1.100

netmask 255.255.255.0

network 192.168.1.0

broadcast 192.168.1.255

gateway 192.168.1.254

sudo /etc/init.d/networking restart

DNS

vi /etc/resolv.conf

nameserver 192.168.1.254nameserver 202.54.1.20

Display network interface information

ifconfig