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[转]ubuntu linux 命令行下配置并启用网络

2011-03-01 21:35:04| 分类：转载知识 | 标签： |举报 |字号大中小订阅

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Ref： http://www.net527.cn/a/caozuoxitong/Linux/5200.html

配置静态IP地址
vi /etc/network/interfaces
内容如下：
auto eth0 ##应该是启用第一块网卡的意思
ifconf eth0 inet static
address 192.168.0.2 ##IP地址
netmask 255.255.255.0 ##子网掩码
gateway 192.168.0.1 ##网关

配置DNS
vi /etc/resolv.conf
增加内容：
nameserver 61.177.7.1

配置网关
route add default gw 192.168.0.1

重新启动网络配置
/etc/init.d/networking restart

以DHCP方式配置网卡

编辑文件/etc/network/interfaces:
sudo vi /etc/network/interfaces

并用下面的行来替换有关eth0的行:
# The primary network interface - use DHCP to find our address
auto eth0
iface eth0 inet dhcp

用下面的命令使网络设置生效:
sudo /etc/init.d/networking restart
也可以在命令行下直接输入下面的命令来获取地址

sudo dhclient eth0

设定第二个IP地址(虚拟IP地址)

编辑文件/etc/network/interfaces:

sudo vi /etc/network/interfaces

在该文件中添加如下的行:
auto eth0:1
iface eth0:1 inet static
address 192.168.1.60
netmask 255.255.255.0
network x.x.x.x
broadcast x.x.x.x
gateway x.x.x.x

根据你的情况填上所有诸如address,netmask,network,broadcast和gateways等信息.
用下面的命令使网络设置生效:
sudo /etc/init.d/networking restart

设置主机名称(hostname)

使用下面的命令来查看当前主机的主机名称:

sudo /bin/hostname

使用下面的命令来设置当前主机的主机名称:

sudo /bin/hostname newname

系统启动时,它会从/etc/hostname来读取主机的名称.

添加虚拟网卡
# ifconfig pcn0:1 plumb
# ifconfig pcn0:1 inet 192.168.56.222 netmask 255.255.255.0 up

永久添加虚拟网卡（重启后仍有效）

方法一：
root@hosta # cat /etc/hostname.ce0
hosta netmask + broadcast + up
addif 192.168.56.222 netmask + broadcast + up

方法二：
root@hosta # cat /etc/hostname.ce0
hosta netmask + broadcast + up
addif cngsitplng3b netmask + broadcast + up

root@hosta # grep cngsitplng3b /etc/hosts
10.106.97.64 cngsitplng3b cngsitplng3b.citos.psa

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