archives of source

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“ubuntu 暂时不能解析域名 archive.ubuntu.com”怎么办？
root下输入命令：lsb_release -a用来查询Ubuntu版本号
登录网站 http://mirrors.163.com/ubuntu/ 在dist目录下面找到自己版本号
更改源，假设我的版本号是trusty
sudo vim /etc/apt/sources.list
把里面的东西改为
deb http://mirrors.163.com/ubuntu/ trusty main universe restricted multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main universe restricted multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ trusty-security universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ trusty-updates universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ trusty-proposed universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed universe main multiverse restricted
deb http://mirrors.163.com/ubuntu/ trusty-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ trusty-backports universe main multiverse restricted
deb-src http://mirrors.163.com/ubuntu/ trusty-updates universe main multiverse restricted

ubuntu8.10的163源为：

deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

CN99

deb http://ubuntu.cn99.com/ubuntu/ trusty main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://ubuntu.cn99.com/ubuntu/ trusty-backports main restricted universe multiverse

ubuntu 8.04的163源为：

deb http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ trusty-backports main restricted universe multiverse

Mirror.lupaworld.com 源更新服务器（浙江省杭州市双线服务器，网通同电信都可以用，亚洲地区官方更新服务器）：

deb http://mirror.lupaworld.com/ubuntu trusty main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu trusty-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu trusty-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu trusty-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu trusty main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu trusty-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu trusty-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu trusty-backports main restricted universe multiverse

Ubuntu 官方源 推荐北方网通用户添加
deb http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse

台湾的官方源速度也相当不错，有时甚至快于内地的：
deb http://tw.archive.ubuntu.com/ubuntu trusty main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu trusty-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu trusty-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu trusty-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu trusty main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu trusty-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu trusty-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu trusty-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu trusty-proposed main restricted universe multiverse

再加个中国电信源科技大学的源（能用速度还不 错）

deb http://ubuntu.uestc.edu.cn/ubuntu/ trusty main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ trusty-security main restricted universe multiverse
deb http://ubuntu.uestc.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ trusty main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ trusty-proposed main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ trusty-updates main restricted universe multiverse

防止非官方源中软件包不全的问题，请在sources.list文件中尾部添加下面这个官方源。

deb http://archive.ubuntu.org.cn/ubuntu-cn/ trusty main restricted universe multiverse

如果没有这个源，下面安装某些软件的时候会提示找不到，比如w32codecs
然后 保存编辑好的文件，执行以下命令更新。
sudo apt-get update #这一步是更新你的源列表，换源後必须执行
（如果更新速度非常慢请更换源 sudo gedit /etc/apt/sources.list ）
sudo apt-get dist-upgrade #这一步是更新软件

台湾源的测试可能会慢一些，耐心等一下，换源后一般下载速度都有几十K，上百K也很正常。～要是总是用几K的外源，Ubuntu也不可能在PRC混了 ～

有的时候更新源你会出现这个问题http://archive.ubuntukylin.com:10006 xenial InRelease: 由于没有公钥，无法验证
解决办法系统设置-->软件与更新-->其他软件中把勾号去掉