更改ubuntu9.10系统的软件源

    ubuntu是通过APT这套工具来管理软件的，在安装软件时可以利用APT去软件源里面寻找并下载安装软件，使用一个稳定且快速的软件源，会大大提高下载软件的速度。下面简单的描述如何更换软件源。

    首先，备份/etc/apt/source.list文档，软件源的地址保存在此文档中，使用命令：
        $sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup

    接下来使用gedit来打开此文档，gedit是一款视图话的文本编辑软件，操作比较方便：
        $sudo gedit /etc/apt/sources.list
    按照要求输入自己的密码，打开后将里面的内容全部删除，从下面的软件源挑选一个来替换，我自己比较喜欢使用网易的软件源，速度很快！
    其他版本请在“ubuntu中文”中找到对应版本的软件源来作替换，可以在下面的网页上找到更多版本的软件源：
   

    在更新了软件源之后，一定要运行下面的命令来刷新列表，以达到与源中的软件仓库同步的目的，
        $sudo apt-get update

Karmic(9.10) 版本

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

deb  karmic main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb  karmic-proposed main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb-src  karmic-proposed main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse

骨头兄亲自搭建并维护这个Ubuntu源（该源位于浙江杭州百兆共享宽带的电信机房)：

deb  karmic main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb  karmic-proposed main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb-src  karmic-proposed main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse
deb  karmic main restricted universe multiverse

网易163更新服务器：

deb  karmic main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb  karmic-proposed main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb-src  karmic-proposed main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse 

sohu 更新服务器：

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

== 如果无法解析uestc.edu.cn域名，请使用以下地址 ==

deb  karmic main multiverse restricted universe
deb  karmic-backports main multiverse restricted universe
deb  karmic-proposed main multiverse restricted universe
deb  karmic-security main multiverse restricted universe
deb  karmic-updates main multiverse restricted universe
deb-src  karmic main multiverse restricted universe
deb-src  karmic-backports main multiverse restricted universe
deb-src  karmic-proposed main multiverse restricted universe
deb-src  karmic-security main multiverse restricted universe
deb-src  karmic-updates main multiverse restricted universe

上海市上海交通大学更新服务器：

deb  karmic main multiverse restricted universe
deb  karmic-backports main multiverse restricted universe
deb  karmic-proposed main multiverse restricted universe
deb  karmic-security main multiverse restricted universe
deb  karmic-updates main multiverse restricted universe
deb-src  karmic main multiverse restricted universe
deb-src  karmic-backports main multiverse restricted universe
deb-src  karmic-proposed main multiverse restricted universe
deb-src  karmic-security main multiverse restricted universe
deb-src  karmic-updates main multiverse restricted universe

中国科学技术大学更新服务器：

deb  karmic main multiverse restricted universe
deb  karmic-backports main multiverse restricted universe
deb  karmic-proposed main multiverse restricted universe
deb  karmic-security main multiverse restricted universe
deb  karmic-updates main multiverse restricted universe
deb-src  karmic main multiverse restricted universe
deb-src  karmic-backports main multiverse restricted universe
deb-src  karmic-proposed main multiverse restricted universe
deb-src  karmic-security main multiverse restricted universe
deb-src  karmic-updates main multiverse restricted universe

中国地质大学（北京）更新服务器：

deb  karmic main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb  karmic-proposed main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb-src  karmic-proposed main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse 

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  karmic main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb  karmic-proposed main multiverse restricted universe
deb-src  karmic-proposed main restricted universe multiverse

mirror.rootguide.org更新服务器（上海市 电信）：

deb  karmic main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb  karmic-proposed main multiverse restricted universe
deb-src  karmic-proposed 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  karmic main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb  karmic-proposed main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse
deb-src  karmic-proposed main restricted universe multiverse

以下源支持IPV6,推荐可以使用IPV6的教育网用户使用，速度在200kb/s左右，如需源代码，将deb替换成deb-src即可

deb  karmic main multiverse restricted universe
deb  karmic-backports main multiverse restricted universe
deb  karmic-proposed main multiverse restricted universe
deb  karmic-security main multiverse restricted universe
deb  karmic-updates main multiverse restricted universe

deb  karmic main multiverse restricted universe
deb  karmic-backports main multiverse restricted universe
deb  karmic-proposed main multiverse restricted universe
deb  karmic-security main multiverse restricted universe
deb  karmic-updates main multiverse restricted universe

deb  karmic main multiverse restricted universe
deb  karmic-backports main multiverse restricted universe
deb  karmic-proposed main multiverse restricted universe
deb  karmic-security main multiverse restricted universe
deb  karmic-updates main multiverse restricted universe

武汉大学更新服务器

deb  karmic main restricted universe multiverse
deb  karmic-backports main restricted universe multiverse
deb  karmic-proposed main restricted universe multiverse
deb  karmic-security main restricted universe multiverse
deb  karmic-updates main restricted universe multiverse
deb-src  karmic main restricted universe multiverse
deb-src  karmic-backports main restricted universe multiverse
deb-src  karmic-proposed main restricted universe multiverse
deb-src  karmic-security main restricted universe multiverse
deb-src  karmic-updates main restricted universe multiverse