在终端输入并运行
sudo cp /etc/apt/sources.list /etc/apt/sources.list.backup （备份当前的源列表，以便日后需要时恢复）
sudo gedit /etc/apt/sources.list （修改sources.list文件中源的列表）
保存后执行
sudo apt-get update
#ubuntu 9.10
#电子科技大学
deb http://Ubuntu.uestc.edu.cn/ubuntu/ karmic main restricted universe multiverse
deb http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-backports main restricted universe multiverse
deb http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-proposed main restricted universe multiverse
deb http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-security main restricted universe multiverse
deb http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-updates main restricted universe multiverse
deb-src http://Ubuntu.uestc.edu.cn/ubuntu/ karmic main restricted universe multiverse
deb-src http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-backports main restricted universe multiverse
deb-src http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-proposed main restricted universe multiverse
deb-src http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-security main restricted universe multiverse
deb-src http://Ubuntu.uestc.edu.cn/ubuntu/ karmic-updates main restricted universe multiverse
#中国科技大学
deb http://debian.ustc.edu.cn/Ubuntu/ karmic main restricted universe multiverse
deb http://debian.ustc.edu.cn/Ubuntu/ karmic-backports restricted universe multiverse
deb http://debian.ustc.edu.cn/Ubuntu/ karmic-proposed main restricted universe multiverse
deb http://debian.ustc.edu.cn/Ubuntu/ karmic-security main restricted universe multiverse
deb http://debian.ustc.edu.cn/Ubuntu/ karmic-updates main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/Ubuntu/ karmic main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/Ubuntu/ karmic-backports main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/Ubuntu/ karmic-proposed main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/Ubuntu/ karmic-security main restricted universe multiverse
deb-src http://debian.ustc.edu.cn/Ubuntu/ karmic-updates main restricted universe multiverse
#北京理工大学
deb http://mirror.bjtu.edu.cn/Ubuntu/ karmic main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/Ubuntu/ karmic-backports main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/Ubuntu/ karmic-proposed main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/Ubuntu/ karmic-security main multiverse restricted universe
deb http://mirror.bjtu.edu.cn/Ubuntu/ karmic-updates main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/Ubuntu/ karmic main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/Ubuntu/ karmic-backports main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/Ubuntu/ karmic-proposed main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/Ubuntu/ karmic-security main multiverse restricted universe
deb-src http://mirror.bjtu.edu.cn/Ubuntu/ karmic-updates main multiverse restricted universe
#兰州大学
deb ftp://mirror.lzu.edu.cn/Ubuntu/ karmic main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/Ubuntu/ karmic-backports main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/Ubuntu/ karmic-proposed main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/Ubuntu/ karmic-security main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/Ubuntu/ karmic-updates main multiverse restricted universe
deb ftp://mirror.lzu.edu.cn/Ubuntu-cn/ karmic main multiverse restricted universe
#上海交通大学
deb http://ftp.sjtu.edu.cn/Ubuntu/ karmic main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/Ubuntu/ karmic-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/Ubuntu/ karmic-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/Ubuntu/ karmic-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/Ubuntu/ karmic-updates main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/Ubuntu-cn/ karmic main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ karmic main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ karmic-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ karmic-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ karmic-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/Ubuntu/ karmic-updates main multiverse restricted universe
#网易资源
deb http://mirrors.163.com/Ubuntu/ karmic main restricted universe multiverse
deb http://mirrors.163.com/Ubuntu/ karmic-security main restricted universe multiverse
deb http://mirrors.163.com/Ubuntu/ karmic-updates main restricted universe multiverse
deb http://mirrors.163.com/Ubuntu/ karmic-proposed main restricted universe multiverse
deb http://mirrors.163.com/Ubuntu/ karmic-backports main restricted universe multiverse
deb-src http://mirrors.163.com/Ubuntu/ karmic main restricted universe multiverse
deb-src http://mirrors.163.com/Ubuntu/ karmic-security main restricted universe multiverse
deb-src http://mirrors.163.com/Ubuntu/ karmic-updates main restricted universe multiverse
deb-src http://mirrors.163.com/Ubuntu/ karmic-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/Ubuntu/ karmic-backports main restricted universe multiverse
#ubuntu 9.04
#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/ jaunty main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ubuntu.uestc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
#== 如果无法解析uestc.edu.cn域名，请使用以下地址 ==
#传说中的电子科大,但不是uestc的官方域名
deb http://ubuntu.dormforce.net/ubuntu/ jaunty main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ubuntu.dormforce.net/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ubuntu.dormforce.net/ubuntu/ jaunty-updates main multiverse restricted universe
#mirror.rootguide.org更新服务器（上海市 电信）
deb http://mirror.rootguide.org/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-backports main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirror.rootguide.org/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://mirror.rootguide.org/ubuntu/ jaunty-proposed main restricted universe multiverse
#Tai w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 jaunty main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://tw.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://tw.archive.ubuntu.com/ubuntu jaunty-proposed main restricted universe multiverse
#北京交大
deb http://mirror.bjtu.edu.cn/ubuntu/ jaunty main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu/ jaunty-backports restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirror.bjtu.edu.cn/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirror.bjtu.edu.cn/ubuntu/ jaunty-updates main restricted universe multiverse
#西南财经大学
deb http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty main restricted universe multiverse
deb http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-backports restricted universe multiverse
deb http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-security main restricted universe multiverse
deb http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty main restricted universe multiverse
deb-src http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://ftp.swufe.edu.cn/mirror/ubuntu/ jaunty-updates main restricted universe multiverse
#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/ jaunty main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ jaunty-backports main restricted universe multivers
#网易163更新服务器
deb http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ jaunty-backports main restricted universe multiverse
#Mirror.lupaworld.com更新服务器（浙江省杭州市双线服务器，推荐）
deb http://mirror.lupaworld.com/ubuntu jaunty main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-security main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-updates main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-backports main restricted universe multiverse
deb http://mirror.lupaworld.com/ubuntu jaunty-proposed main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-security main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-updates main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-backports main restricted universe multiverse
deb-src http://mirror.lupaworld.com/ubuntu jaunty-proposed main restricted universe multiverse
#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/ jaunty main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://debian.ustc.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
#传说中的上海交通大学，最热门的源之一
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
deb http://ftp.sjtu.edu.cn/ubuntu-cn/ jaunty main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-backports main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-proposed main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-security main multiverse restricted universe
deb-src http://ftp.sjtu.edu.cn/ubuntu/ jaunty-updates main multiverse restricted universe
#清华大学
deb ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty main restricted universe multiverse
deb ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-backports restricted universe multiverse
deb ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-proposed main restricted universe multiverse
deb ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-security main restricted universe multiverse
deb ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-updates main restricted universe multiverse
deb-src ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty main restricted universe multiverse
deb-src ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-backports main restricted universe multiverse
deb-src ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-proposed main restricted universe multiverse
deb-src ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-security main restricted universe multiverse
deb-src ftp://ftp3.tsinghua.edu.cn/mirror/ubuntu/ubuntu/ jaunty-updates main restricted universe multiverse
