Simone如何将ubuntu 10.04.4 lts 升级到12.04 lts
的有关信息介绍如下：
备份sources.list文件： cp /etc/apt/sources.list etc-backup/etc-apt-source.list 打开sources.list： sudo gedit /etc/apt/sources.list修改sources.list，将sources.list内容全部替换为以下内容：# 电子科大（教育网用户推荐）deb http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiversedeb http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiversedeb http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiversedeb http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiversedeb http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiversedeb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise main restricted universe multiversedeb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-backports main restricted universe multiversedeb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-proposed main restricted universe multiversedeb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-security main restricted universe multiversedeb-src http://ubuntu.uestc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse# 中国科技大学（教育网用户推荐）deb http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiversedeb http://debian.ustc.edu.cn/ubuntu/ precise-backports restricted universe multiversedeb http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiversedeb http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiversedeb http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiversedeb-src http://debian.ustc.edu.cn/ubuntu/ precise main restricted universe multiversedeb-src http://debian.ustc.edu.cn/ubuntu/ precise-backports main restricted universe multiversedeb-src http://debian.ustc.edu.cn/ubuntu/ precise-proposed main restricted universe multiversedeb-src http://debian.ustc.edu.cn/ubuntu/ precise-security main restricted universe multiversedeb-src http://debian.ustc.edu.cn/ubuntu/ precise-updates main restricted universe multiverse# 北京理工（教育网用户推荐）deb http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universedeb http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universedeb http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universedeb http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universedeb http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universedeb-src http://mirror.bjtu.edu.cn/ubuntu/ precise main multiverse restricted universedeb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-backports main multiverse restricted universedeb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-proposed main multiverse restricted universedeb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-security main multiverse restricted universedeb-src http://mirror.bjtu.edu.cn/ubuntu/ precise-updates main multiverse restricted universe# 163（非教育网推荐）deb http://mirrors.163.com/ubuntu/ precise main restricteddeb-src http://mirrors.163.com/ubuntu/ precise main restricteddeb http://mirrors.163.com/ubuntu/ precise-updates main restricteddeb-src http://mirrors.163.com/ubuntu/ precise-updates main restricteddeb http://mirrors.163.com/ubuntu/ precise universedeb-src http://mirrors.163.com/ubuntu/ precise universedeb http://mirrors.163.com/ubuntu/ precise-updates universedeb-src http://mirrors.163.com/ubuntu/ precise-updates universedeb http://mirrors.163.com/ubuntu/ precise multiversedeb-src http://mirrors.163.com/ubuntu/ precise multiversedeb http://mirrors.163.com/ubuntu/ precise-updates multiversedeb-src http://mirrors.163.com/ubuntu/ precise-updates multiversedeb http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.163.com/ubuntu/ precise-backports main restricted universe multiversedeb http://mirrors.163.com/ubuntu/ precise-security main restricteddeb-src http://mirrors.163.com/ubuntu/ precise-security main restricteddeb http://mirrors.163.com/ubuntu/ precise-security universedeb-src http://mirrors.163.com/ubuntu/ precise-security universedeb http://mirrors.163.com/ubuntu/ precise-security multiversedeb-src http://mirrors.163.com/ubuntu/ precise-security multiversedeb http://extras.ubuntu.com/ubuntu precise maindeb-src http://extras.ubuntu.com/ubuntu precise main# sohu（非教育网推荐）deb http://mirrors.sohu.com/ubuntu/ precise main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise main restricteddeb http://mirrors.sohu.com/ubuntu/ precise-updates main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise-updates main restricteddeb http://mirrors.sohu.com/ubuntu/ precise universedeb-src http://mirrors.sohu.com/ubuntu/ precise universedeb http://mirrors.sohu.com/ubuntu/ precise-updates universedeb-src http://mirrors.sohu.com/ubuntu/ precise-updates universedeb http://mirrors.sohu.com/ubuntu/ precise multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise multiversedeb http://mirrors.sohu.com/ubuntu/ precise-updates multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-updates multiversedeb http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiversedeb http://mirrors.sohu.com/ubuntu/ precise-security main restricteddeb-src http://mirrors.sohu.com/ubuntu/ precise-security main restricteddeb http://mirrors.sohu.com/ubuntu/ precise-security universedeb-src http://mirrors.sohu.com/ubuntu/ precise-security universedeb http://mirrors.sohu.com/ubuntu/ precise-security multiversedeb-src http://mirrors.sohu.com/ubuntu/ precise-security multiversedeb http://extras.ubuntu.com/ubuntu precise maindeb-src http://extras.ubuntu.com/ubuntu precise main4保存对source.list的修改。5更新源信息： sudo apt-get update
