ubuntu sudo update下sudo apt update 失败

来源：蜘蛛抓取(WebSpider) 时间：2016-08-28 19:24 标签： sudo apt update 失败
ubuntu 源更新不了 sudo apt-get update里面显示的通通忽略_百度知道sudo apt-get update
报了一堆错误：
Err http://cn. trusty InRelease
Err http://cn. trusty-updates InRelease
Err http://cn. trusty-backports InRelease
Err http://cn. trusty Release.gpg
W: Failed to fetch http://cn./ubuntu/dists/trusty/InRelease
错误显示了源有问题，好像是被墙了。
查找解决办法，修改/etc/apt/source.list文件。将源改成163的或者阿里的：
deb /ubuntu/ vivid main restricted universe multiverse
deb /ubuntu/ vivid-security main restricted universe multiverse
deb /ubuntu/ vivid-updates main restricted universe multiverse
deb /ubuntu/ vivid-proposed main restricted universe multiverse
deb /ubuntu/ vivid-backports main restricted universe multiverse
deb-src /ubuntu/ vivid main restricted universe multiverse
deb-src /ubuntu/ vivid-security main restricted universe multiverse
deb-src /ubuntu/ vivid-updates main restricted universe multiverse
deb-src /ubuntu/ vivid-proposed main restricted universe multiverse
deb-src /ubuntu/ vivid-backports main restricted universe multiverse
但是source.list文件是只读的，修改不了。
要使用sudo gedit&/etc/apt/source.list修改，但是gedit 指令没有装，使用sudo apt-get install gedit又安装不了。
解决办法：（修改DNS）
sudo vi /etc/resolvconf/resolv.conf.d/base
在里面插入：nameserver&8.8.8.8nameserver&8.8.4.4
修改好保存!wq，
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
sudo apt-get update
可以运行，然后就可以使用sudo apt-get install **指令了。
阅读(...) 评论()ubuntu 12.04 sudo apt-get update 错误_百度知道3982人阅读
Linux（31）
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：
/etc/apt$ sudo apt-get update
precise-security InRelease
precise-security Release.gpg
Temporary failure resolving ''
Err http://cn. precise InRelease
Err http://cn. precise-updates InRelease
Err http://cn. precise-backports InRelease
Err http://cn. precise Release.gpg
Temporary failure resolving 'cn.'
Err http://cn. precise-updates Release.gpg
Temporary failure resolving 'cn.'
Err http://cn. precise-backports Release.gpg
Temporary failure resolving 'cn.'
Reading package lists... Done
W: Failed to fetch http://cn./ubuntu/dists/precise/InRelease
W: Failed to fetch http://cn./ubuntu/dists/precise-updates/InRelease
W: Failed to fetch http://cn./ubuntu/dists/precise-backports/InRelease
W: Failed to fetch /ubuntu/dists/precise-security/InRelease
W: Failed to fetch /ubuntu/dists/precise-security/Release.gpg
Temporary failure resolving ''
W: Failed to fetch http://cn./ubuntu/dists/precise/Release.gpg
Temporary failure resolving 'cn.'
W: Failed to fetch http://cn./ubuntu/dists/precise-updates/Release.gpg
Temporary failure resolving 'cn.'
W: Failed to fetch http://cn./ubuntu/dists/precise-backports/Release.gpg
Temporary failure resolving 'cn.'
W: Some index files failed to download. They have been ignored, or old ones used instead.
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
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共有5个答案
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可能是你的版本太老了,或者更新源错误
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请先确保你的Ubuntu服务器能稳定地连上和cn..
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