ubuntu 网络设置 备忘

1.IP
~~~~~~~~~~~~~~~~~
vim /etc/network/interfaces

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
#iface eth0 inet dhcp

iface eth0 inet static       
address 192.168.1.100
gateway 192.168.1.1
netmask 255.255.255.0

2.DNS
~~~~~~~~~~~~~~~~~~~~~~
vim /etc/resolv.conf

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver ipaddress
nameserver ipaddress

3.network restart
sudo /etc/init.d/networking restart
sudo apt-get update


4.paramater meaning
man interfaces