修改源并更新你的(k/x/ed)ubuntu

 
不同的网络状况连接以下源的速度不同。建议在添加前手动验证以下源的连接速度（ping下就行）。比如说北京网通用户连接cn99就非常慢，而 ftp.sjtu.edu.cn是相对较快的源。选择最快的源可大大节省下载时间，请根据自己网络环境设置更新服务器，以达到最快的速度。

注意，你可以同时加入几个源。尽量选择一组官方的源（也就是下面的Archive.ubuntu.com的条目）直接加在文件的最后，以避免非官方源软件 包不全时出现 404 Not Found 文件未发现的错误。建议电信用户使用cn99和台湾大学的源，网通用户使用台湾大学的源，教育网用户使用教育网的源。

打开终端方法：

按下ALT+F2 -> gnome-terminal -> 运行 #(ed)ubuntu
按下ALT+F2 -> konsole -> 运行 #Kubuntu
按下ALT+F2 -> xfce4-terminal -> 运行 #xubuntu

在终端执行命令

备份当前的源列表，以便日后需要时恢复：

sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

编辑源列表

gksu gedit /etc/apt/sources.list #(ed)ubuntu
kdesu kate /etc/apt/sources.list #kubuntu
gksu mousepad /etc/apt/sources.list #xubuntu
sudo vim /etc/apt/sources.list #通用

从以下各服务器列表内容中选择一段替换文件中的所有内容，一般来说加入一至两组即可，加多了影响更新速度。为防止非官方源中软件包不全的问题，请在sources.list文件中尾部添加一组官方源。

Archive.ubuntu.com更新服务器（欧洲，此为官方源，电信网通用户使用)：

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

Ubuntu.cn99.com更新服务器（江苏省常州市电信，推荐电信用户使用）：

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

Mirrors.shlug.org更新服务器（电信服务器，Ubuntu China Official Mirror, maintained by Shanghai Linux User Group）：

deb http://cn.archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb http://cn.archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse

Mirror.lupaworld.com更新服务器（浙江省杭州市双线服务器）：

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

厦门大学更新服务器（教育网服务器）：

deb ftp://ubuntu.realss.cn/ubuntu/ gutsy main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ gutsy-backports restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ gutsy-proposed main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ gutsy-security main restricted universe multiverse
deb ftp://ubuntu.realss.cn/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ gutsy main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ gutsy-proposed main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ gutsy-security main restricted universe multiverse
deb-src ftp://ubuntu.realss.cn/ubuntu/ gutsy-updates main restricted universe multiverse

成都市 电子科技大学更新服务器（教育网，推荐校园网和网通用户使用）：

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

== 如果无法解析uestc.edu.cn域名，请使用以下地址 ==

deb http://ubuntu.dormforce.net/ubuntu/ gutsy main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ gutsy-backports main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ gutsy-proposed main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ gutsy-security main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ gutsy-updates main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ gutsy main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ gutsy-backports main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ gutsy-security main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ gutsy-updates main multiverse restricted universe

上海市上海交通大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb http://ftp.sjtu.edu.cn/ubuntu/ gutsy main multiverse restricted universe
deb http://ftp.sjtu.ed d009
u.cn/ubuntu/ gutsy-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ gutsy-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ gutsy-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ gutsy-updates main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ gutsy main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ gutsy-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ gutsy-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ gutsy-updates main multiverse restricted universe

中国科学技术大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb http://debian.ustc.edu.cn/ubuntu/ gutsy main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ gutsy-backports main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ gutsy-proposed main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ gutsy-security main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ gutsy-updates main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ gutsy main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ gutsy-backports main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ gutsy-security main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ gutsy-updates main multiverse restricted universe

北京市清华大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb http://mirror9.net9.org/ubuntu/ gutsy main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ gutsy-backports main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ gutsy-proposed main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ gutsy-security main multiverse restricted universe
deb http://mirror9.net9.org/ubuntu/ gutsy-updates main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ gutsy main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ gutsy-backports main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ gutsy-security main multiverse restricted universe
deb-src http://mirror9.net9.org/ubuntu/ gutsy-updates main multiverse restricted universe

沈阳市东北大学更新服务器（教育网，推荐校园网和网通用户使用）：

deb ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy main multiverse restricted universe
deb ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-backports main multiverse restricted universe
deb ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-proposed main multiverse restricted universe
deb ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-security main multiverse restricted universe
deb ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-updates main multiverse restricted universe
deb-src ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy main multiverse restricted universe
deb-src ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-backports main multiverse restricted universe
deb-src ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-security main multiverse restricted universe
deb-src ftp://ftp.neu.edu.cn/mirror/archive.ubuntu.com/ubuntu/ gutsy-updates main multiverse restricted universe

中国台湾 台湾大学更新服务器（推荐网通用户使用，电信PING平均响应速度41MS。强烈推荐此源，比较完整，较少出现同步问题）：

deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-backports main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-security main restricted universe multiverse
deb http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://ubuntu.csie.ntu.edu.tw/ubuntu/ gutsy-proposed main restricted universe multiverse

Mirror.vmmatrix.net更新服务器（上海市电信，推荐电信网通用户使用）：

deb http://mirror.vmmatrix.net/ubuntu/ gutsy main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ gutsy main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ gutsy-backports main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://mirror.vmmatrix.net/ubuntu/ gutsy-security main restricted universe multiverse
deb http://mirror.vmmatrix.net/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://mirror.vmmatrix.net/ubuntu/ gutsy-proposed main restricted universe multiverse

ubuntu.cnsite.org更新服务器（福建省福州市 电信）：

deb http://ubuntu.cnsite.org/ubuntu/ gutsy main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ gutsy main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ gutsy-backports main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://ubuntu.cnsite.org/ubuntu/ gutsy-security main restricted universe multiverse
deb http://ubuntu.cnsite.org/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://ubuntu.cnsite.org/ubuntu/ gutsy-proposed main restricted universe multiverse

mirror.rootguide.org更新服务器（上海市 电信）：

deb http://mirror.rootguide.org/ubuntu/ gutsy main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ gutsy main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ gutsy-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ gutsy-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ gutsy-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ gutsy-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ gutsy-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ gutsy-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ gutsy-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ gutsy-proposed main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu-cn/ gutsy 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 gutsy main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu gutsy-proposed main restricted universe multiverse

Ubuntu-cn，推荐各位中文用户添加:

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

也可以到以下网址自定义产生若干源：

http://www.ubuntulinux.nl/source-o-matic

以下网址有极其全面的源，以供补充：

http://italy.copybase.ch/blog/lista-repository-sourceslist-ottimizzata-per-ubuntu-kubuntu-linux/

官方采集的源列表：

https://launchpad.net/ubuntu/+archivemirrors

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，换源后必须执行
sudo apt-get dist-upgrade #这一步是更新软件，如果你对新版本软件的需求不是那么迫切，可以不执行

我的源：
deb http://ubuntu.cn99.com/ubuntu/ feisty main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-security main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-updates main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-backports main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ feisty main restricted universe multiverse

deb http://archive.ubuntu.com/ubuntu/ feisty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-backports main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ feisty-proposed main restricted universe multiverse
deb http://ubuntu.cn99.com/ubuntu-cn/ feisty main restricted universe multiverse

deb http://mirror.lupaworld.com/ubuntu/archive/ feisty main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ feisty-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ feisty-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ feisty-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/archive/ feisty-proposed main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu/ubuntu-cn/ feisty main restricted universe multiverse

deb http://ubuntu.beryl-project.org/ feisty main