ubuntu更换软件源（ＵＥＳＴＣ）

使用方法

凝聚ubuntu官方源http://ubuntu.cnssuestc.org/

编辑/etc/apt/sources.list文件, 在文件最前面添加对应版本的源列表（操作前请做好相应备份）
查看linux内核版本uname -a
查看ubuntu内核版本 cat /etc/issue
ubuntu13.10

deb http://ubuntu.cnssuestc.org/ubuntu/ saucy main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ saucy-backports main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ saucy-proposed main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ saucy-security main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ saucy-updates main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ saucy main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ saucy-backports main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ saucy-proposed main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ saucy-security main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ saucy-updates main restricted universe multiverse

ubuntu13.04

deb http://ubuntu.cnssuestc.org/ubuntu/ raring main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ raring-backports main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ raring-proposed main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ raring-security main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ raring-updates main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ raring main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ raring-backports main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ raring-proposed main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ raring-security main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ raring-updates main restricted universe multiverse

ubuntu12.10

deb http://ubuntu.cnssuestc.org/ubuntu/ quantal main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ quantal-backports main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ quantal-proposed main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ quantal-security main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ quantal-updates main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ quantal main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ quantal-backports main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ quantal-proposed main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ quantal-security main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ quantal-updates main restricted universe multiverse

ubuntu12.04

deb http://ubuntu.cnssuestc.org/ubuntu/ precise main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ precise-backports main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ precise-proposed main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ precise-security main restricted universe multiverse
deb http://ubuntu.cnssuestc.org/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ precise main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ precise-backports main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ precise-proposed main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ precise-security main restricted universe multiverse
deb-src http://ubuntu.cnssuestc.org/ubuntu/ precise-updates main restricted universe multiverse