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更新Ubuntu 8.10源的办法：
首先看清源的版本，intrepid代表8.10，hardy代表8.04。教育网用户就近选择大学源，我一直用中科大的，前两年可以达到几M的速度，近来不知是我们网速的原因，还是他们负担过大的原因，没有以前快了，但几十几百的速度，也够了。
命令：sudo gedit /etc/apt/sources.list
用你选择的源覆盖原先的，注意网页复制可能产生多余的空格等，自行去掉。
更新命令，其实系统自己也会自动更新。
sudo apt-get update
sudo apt-get dist-upgrade
#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/ intrepid main restricted universe multiversedeb http://archive.ubuntu.com/ubuntu/ intrepid-security main restricted universe multiversedeb http://archive.ubuntu.com/ubuntu/ intrepid-updates main restricted universe multiversedeb http://archive.ubuntu.com/ubuntu/ intrepid-proposed main restricted universe multiversedeb http://archive.ubuntu.com/ubuntu/ intrepid-backports main restricted universe multiversedeb-src http://archive.ubuntu.com/ubuntu/ intrepid main restricted universe multiversedeb-src http://archive.ubuntu.com/ubuntu/ intrepid-security main restricted universe multiversedeb-src http://archive.ubuntu.com/ubuntu/ intrepid-updates main restricted universe multiversedeb-src http://archive.ubuntu.com/ubuntu/ intrepid-proposed main restricted universe multiversedeb-src http://archive.ubuntu.com/ubuntu/ intrepid-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/ intrepid main restricted universe multiversedeb http://ubuntu.cn99.com/ubuntu/ intrepid-security main restricted universe multiversedeb http://ubuntu.cn99.com/ubuntu/ intrepid-updates main restricted universe multiversedeb http://ubuntu.cn99.com/ubuntu/ intrepid-proposed main restricted universe multiversedeb http://ubuntu.cn99.com/ubuntu/ intrepid-backports main restricted universe multiversedeb-src http://ubuntu.cn99.com/ubuntu/ intrepid main restricted universe multiversedeb-src http://ubuntu.cn99.com/ubuntu/ intrepid-security main restricted universe multiversedeb-src http://ubuntu.cn99.com/ubuntu/ intrepid-updates main restricted universe multiversedeb-src http://ubuntu.cn99.com/ubuntu/ intrepid-proposed main restricted universe multiversedeb-src http://ubuntu.cn99.com/ubuntu/ intrepid-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 http://cn.archive.Ubuntu.com/ubuntu intrepid main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu intrepid-security main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu intrepid-backports main restricted universe multiversedeb http://cn.archive.ubuntu.com/ubuntu intrepid-proposed main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu intrepid main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu intrepid-security main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu intrepid-updates main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu intrepid-backports main restricted universe multiversedeb-src http://cn.archive.ubuntu.com/ubuntu intrepid-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 intrepid main restricted universe multiversedeb http://mirror.lupaworld.com/ubuntu intrepid-security main restricted universe multiversedeb http://mirror.lupaworld.com/ubuntu intrepid-updates main restricted universe multiversedeb http://mirror.lupaworld.com/ubuntu intrepid-backports main restricted universe multiversedeb http://mirror.lupaworld.com/ubuntu intrepid-proposed main restricted universe multiversedeb-src http://mirror.lupaworld.com/ubuntu intrepid main restricted universe multiversedeb-src http://mirror.lupaworld.com/ubuntu intrepid-security main restricted universe multiversedeb-src http://mirror.lupaworld.com/ubuntu intrepid-updates main restricted universe multiversedeb-src http://mirror.lupaworld.com/ubuntu intrepid-backports main restricted universe multiversedeb-src http://mirror.lupaworld.com/ubuntu intrepid-proposed main restricted universe multiverse
