Ubuntu Networking Configuration Using Command Line

from Ubuntu Geek

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設定DHCP （假設是用eth0）

$ sudo vim /etc/network/interfaces

auto eth0
iface eth0 inet dhcp

設定固定IP

$ sudo vim /etc/network/interfaces

auto eth0
iface eth0 inet static
address 192.168.3.90
gateway 192.168.3.1
netmask 255.255.255.0
network 192.168.3.0
broadcast 192.168.3.255

設定DNS

$sudo vim /etc/resolv.conf

nameserver your.dns.server