当运行apt-get update后出现如下错误时：
E: Some index files failed to download, they have been ignored, or old ones used instead.
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：
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/etc/apt$ sudo apt-get update
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Err http://security.ubuntu.com precise-security InRelease
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Err http://security.ubuntu.com precise-security Release.gpg
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Temporary failure resolving 'security.ubuntu.com'
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Err http://cn.archive.ubuntu.com precise InRelease
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Err http://cn.archive.ubuntu.com precise-updates InRelease
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Err http://cn.archive.ubuntu.com precise-backports InRelease
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Err http://cn.archive.ubuntu.com precise Release.gpg
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Temporary failure resolving 'cn.archive.ubuntu.com'
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Err http://cn.archive.ubuntu.com precise-updates Release.gpg
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Temporary failure resolving 'cn.archive.ubuntu.com'
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Err http://cn.archive.ubuntu.com precise-backports Release.gpg
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Temporary failure resolving 'cn.archive.ubuntu.com'
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Reading package lists... Done
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W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise/InRelease
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W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-updates/InRelease
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W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/InRelease
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W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/InRelease
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W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/Release.gpg Temporary failure resolving 'security.ubuntu.com'
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W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com'
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W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-updates/Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com'
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W: Failed to fetch http://cn.archive.ubuntu.com/ubuntu/dists/precise-backports/Release.gpg Temporary failure resolving 'cn.archive.ubuntu.com'
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W: Some index files failed to download. They have been ignored, or old ones used instead.
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xinju@xinjuOffice:/etc/apt$ cd ../network
阿里源:
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deb http://mirrors.aliyun.com/ubuntu/ raring main restricted universe multiverse
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deb http://mirrors.aliyun.com/ubuntu/ raring-security main restricted universe multiverse
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deb http://mirrors.aliyun.com/ubuntu/ raring-updates main restricted universe multiverse
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deb http://mirrors.aliyun.com/ubuntu/ raring-proposed main restricted universe multiverse
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deb http://mirrors.aliyun.com/ubuntu/ raring-backports main restricted universe multiverse
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deb-src http://mirrors.aliyun.com/ubuntu/ raring main restricted universe multiverse
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deb-src http://mirrors.aliyun.com/ubuntu/ raring-security main restricted universe multiverse
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deb-src http://mirrors.aliyun.com/ubuntu/ raring-updates main restricted universe multiverse
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deb-src http://mirrors.aliyun.com/ubuntu/ raring-proposed main restricted universe multiverse
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deb-src http://mirrors.aliyun.com/ubuntu/ raring-backports main restricted universe multiverse
修改ip:
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# This file describes the network interfaces available on your system
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# and how to activate them. For more information, see interfaces(5).
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# The loopback network interface
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auto lo
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iface lo inet loopback
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# The primary network interfacea
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auto eth0
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iface eth0 inet static
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address 192.168.2.170
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netmask 255.255.255.0
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broadcast 192.168.2.255
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gateway 192.168.2.1
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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
(责任编辑：IT) |
