静态IP配置方法：
编辑/etc/network/interfaces，删掉内容，并输入以下几行（假设你的网卡是eth0）
,,,`sudo gedit /etc/network/interfaces
auto eth0
iface eth0 inet static //指定为static
address 192.168.1.103 //IP地址
gateway 192.168.1.1 //网关
netmask 255.255.255.0 //子网掩码
network 192.168.1.0 //这个是网络？
broadcast 192.168.1.255 //广播`
然后重启网络设备
sudo /etc/init.d/networking restart
设置DNS：
Ubuntu设置DNS，只要将DNS地址写入/ect/resolv.conf文件即可，但在12.04 desktop版中，重启系统之后，静态IP设置生效，但无法链接外网，/etc/resole.conf文件的DNS地址也覆盖掉了。
解决办法，在/etc/resolvconf/resolv.conf.d/目录下创建tail文件，写入
nameserver 202.96.134.133
nameserver 202.96.128.68
然后重启，DNS生效。
参考链接：http://askubuntu.com/questions/130452/how-do-i-add-a-dns-server-via-resolv-conf
Ubuntu12.04的一些源列表
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安装好ubuntu 12.04之后，可以联网之后，马上要做的最重要的事情之一就是配置更新源列表，这样以后安装更新或者软件才可以获得较好的下载速度。\ 首先，备份一下原来的源地址列表文件\ sudo cp /etc/apt/sources.list /etc/apt/sources.list.old\ 然后进行修改\ sudo gedit /etc/apt/sources.list\ 可以在里面添加资源地址，我是直接覆盖掉原来的。\ 添加好后保存，再输入 sudo apt-get update 就可以更新了，等着慢慢下载东西吧。我虽然选了一个网易的和一个中科大的源，无奈那天网速不给力，还是花了差不多两个小时。\
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#骨头源，骨头源是bones7456架设的一个Ubuntu源 ，提供ubuntu,deepin\ deb http://ubuntu.srt.cn/ubuntu/ precise main universe restricted multiverse\ deb-src http://ubuntu.srt.cn/ubuntu/ precise main universe restricted multiverse\ deb http://ubuntu.srt.cn/ubuntu/ precise-security universe main multiverse restricted\ deb-src http://ubuntu.srt.cn/ubuntu/ precise-security universe main multiverse restricted\ deb http://ubuntu.srt.cn/ubuntu/ precise-updates universe main multiverse restricted\ deb http://ubuntu.srt.cn/ubuntu/ precise-proposed universe main multiverse restricted\ deb-src http://ubuntu.srt.cn/ubuntu/ precise-proposed universe main multiverse restricted\ deb http://ubuntu.srt.cn/ubuntu/ precise-backports universe main multiverse restricted\ deb-src http://ubuntu.srt.cn/ubuntu/ precise-backports universe main multiverse restricted\ deb-src http://ubuntu.srt.cn/ubuntu/ precise-updates universe main multiverse restricted
#mirror.lupaworld.com的源，速度很快\ deb http://mirror.lupaworld.com/ubuntu/archive/ precise main restricted universe multiverse\ deb http://mirror.lupaworld.com/ubuntu/archive/ precise-security main restricted universe multiverse\ deb http://mirror.lupaworld.com/ubuntu/archive/ precise-updates main restricted universe multiverse\ deb http://mirror.lupaworld.com/ubuntu/archive/ precise-backports main restricted universe multiverse\ deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ precise main restricted universe multiverse
#ubuntu.cn99.com源（推荐）:\ deb http://ubuntu.cn99.com/ubuntu/ precise main restricted universe multiverse\ deb http://ubuntu.cn99.com/ubuntu/ precise-updates main restricted universe multiverse\ deb http://ubuntu.cn99.com/ubuntu/ precise-security main restricted universe multiverse\ deb http://ubuntu.cn99.com/ubuntu/ precise-backports main restricted universe multiverse\ deb http://ubuntu.cn99.com/ubuntu-cn/ precise main restricted universe multiverse
#教育网源\ #电子科技大学\ deb http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse\ deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse\ deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse\ deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse\ deb http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse\ deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiverse\ deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse\ deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse\ deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiverse\ deb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
#中国科技大学\ deb http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse\ deb http://debian.ustc.edu.cn/ubuntu/ precise-backports restricted universe multiverse\ deb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse\ deb http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse\ deb http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse\ deb-src http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiverse\ deb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiverse\ deb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse\ deb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiverse\ deb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse
#北京理工大学\ deb http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe\ deb http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe\ deb http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe\ deb http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe\ deb http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe\ deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universe\ deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe\ deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe\ deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe\ deb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
#兰州大学\ deb ftp://mirror.lzu.edu.cn/ubuntu/ precise main multiverse restricted universe\ deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe\ deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe\ deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-security main multiverse restricted universe\ deb ftp://mirror.lzu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe\ deb ftp://mirror.lzu.edu.cn/ubuntu-cn/ precise main multiverse restricted universe
#上海交通大学\ deb http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe\ deb http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe\ deb http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe\ deb http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe\ deb http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe\ deb http://ftp.sjtu.edu.cn/ubuntu-cn/ precise main multiverse restricted universe\ deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise main multiverse restricted universe\ deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universe\ deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universe\ deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universe\ deb-src http://ftp.sjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe
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