可以将目录下/var/lib/apt/lists/partial/所有的文件清掉，再次运行apt-get update即可！自带源在大陆不好。
出现以下错误：
[plain] view plain copy /etc/apt$ sudo apt-get update Err http://security.ubuntu.com precise-security InRelease Err http://security.ubuntu.com precise-security Release.gpg Temporary failure resolving 'security.ubuntu.com' Err http://cn.archive.ubuntu.com precise InRelease Err http://cn.archive.ubuntu.com precise-updates InRelease Err http://cn.archive.ubuntu.com precise-backports InRelease Err http://cn.archive.ubuntu.com precise Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com' Err http://cn.archive.ubuntu.com precise-updates Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com' Err http://cn.archive.ubuntu.com precise-backports Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com' Reading package lists... Done W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise/InRelease W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-updates/InRelease W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/InRelease W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/InRelease W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/Release.gpg Temporary failure resolving 'security.ubuntu.com' W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com' W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-updates/Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com' W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com' W: Some index files failed to download. They have been ignored, or old ones used instead. xinju@xinjuOffice:/etc/apt$ cd ../network
阿里源:
[plain] view plain copy deb http://mirrors.aliyun.com/ubuntu/ raring main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ raring-security main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ raring-updates main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ raring-proposed main restricted universe multiverse deb http://mirrors.aliyun.com/ubuntu/ raring-backports main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ raring main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ raring-security main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ raring-updates main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ raring-proposed main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ raring-backports main restricted universe multiverse
修改ip:
[plain] view plain copy # 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 interfacea auto eth0 iface eth0 inet static address 192.168.2.170 netmask 255.255.255.0 broadcast 192.168.2.255 gateway 192.168.2.1 dns-nameservers 192.168.2.1
修改dns:
1,重启生效：
sudo vi /etc/resolvconf/resolv.conf.d/base（这个文件默认是空的）
在里面插入： nameserver 8.8.8.8 nameserver 8.8.4.4
如果有多个DNS就一行一个
修改好保存，然后执行
sudo resolvconf -u
再看/etc/resolv.conf，最下面就多了2行：
cat /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 8.8.8.8 nameserver 8.8.4.4
可以看到我们的设置已经加上了，然后再ping一个域名，当时就可以解析了，无需重启。
2，重启失效：
配置文件地址 /etc/resolv.conf
使用编辑器打开
改为如下内容： search localdomain nameserver 202.96.128.86 希望修改成的DNS nameserver 202.96.128.166 备用DNS
重启网络：sudo /etc/init.d/networking restart。即可
