安装Ubuntu12.04以及sources.list更新源推荐

sources.list问题重新安装Ubuntu12.04放弃Ununtu14.10，开始安装Ubuntu14.10版本，无论怎么修改/etc/apt/sources.list，在安装软件时都找不到package

所以重新安装Ubuntu12.04 Precise 的32位Server版和32位Desktop版本。

1 下载安装Ubuntu12.04 Precise镜像

下载地址：http://releases.ubuntu.com/precise/

2 在vmware12 中安装Server版

安装见：

3 更新sources.list源，否则有些包无法定位

（1）注意1 先备份旧的的sources.list

$sudo cp /etc/apt/sourcs.list /etc/apt/sources_original.bak

（2）编辑添加国内比较快速稳定的源，注意添加的源中用的版本名要与Ubuntu版本要一致，否则灾难不断，Ubuntu12.04的版本名“Precise”

$sudo vi /etc/apt/sources.list

在文件靠前加入下面的一个或者几个源，保存退出。

（3）马上更新源

$sudo apt-get update

附推荐的“Precise”更新源：

<span class="preprocessor" style="color: rgb(153, 153, 153); font-weight: bold;">##网易源(广东电信：适合电信用户)</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-security main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-updates main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-proposed main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.163.com/ubuntu/ precise-backports main restricted universe multiverse</span>
 
<span class="preprocessor" style="color: rgb(153, 153, 153); font-weight: bold;">##搜狐源(山东网通：适合网通用户)</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-security main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-updates main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-proposed main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-security main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-updates main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-proposed main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirrors.sohu.com/ubuntu/ precise-backports main restricted universe multiverse</span>
 
<span class="preprocessor" style="color: rgb(153, 153, 153); font-weight: bold;">##台湾ubuntu官网源</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-security main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-proposed main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-security main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-updates main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-backports main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//tw.archive.ubuntu.com/ubuntu precise-proposed main restricted universe multiverse</span>
 
<span class="preprocessor" style="color: rgb(153, 153, 153); font-weight: bold;">##教育网帝都的可以使用北理工的源</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-security main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse</span>
deb http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-security main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-updates main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-backports main restricted universe multiverse</span>
deb-src http:<span class="comment" style="color: rgb(153, 153, 136); font-style: italic;">//mirror.bit.edu.cn/ubuntu/ precise-proposed main restricted universe multiverse</span>