ubuntu 12.04更新源

http://wangheng.org/ubuntu-12-04-source-list.html

1、首先備份Ubuntu 11.10源列表

sudo cp /etc/apt/sources.list/etc/apt/sources.list.backup （備份下當前的源列表）

2、修改更新源

sudo gedit /etc/apt/sources.lis

#網易源（速度很快）

deb http://mirrors.163.com/ubuntu/precise main universe restricted multiverse deb-src http://mirrors.163.com/ubuntu/precise main universe restricted multiverse deb http://mirrors.163.com/ubuntu/precise-security universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/precise-security universe main multiverse restricted deb http://mirrors.163.com/ubuntu/precise-updates universe main multiverse restricted deb http://mirrors.163.com/ubuntu/precise-proposed universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/precise-proposed universe main multiverse restricted deb http://mirrors.163.com/ubuntu/precise-backports universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/precise-backports universe main multiverse restricted deb-src http://mirrors.163.com/ubuntu/precise-updates universe main multiverse restricted

3、保存後就是

	sudo apt-get update sudo apt-get upgrade