ubuntu 源
源的位置：/etc/apt/source.list ?(更改前最好备份)
163的源：
#######################################
#163
deb http://mirrors.163.com/ubuntu/ lucid main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ lucid-security main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ lucid-updates main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ lucid-proposed main restricted universe multiverse
deb http://mirrors.163.com/ubuntu/ lucid-backports main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ lucid main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ lucid-security main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ lucid-updates main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ lucid-proposed main restricted universe multiverse
deb-src http://mirrors.163.com/ubuntu/ lucid-backports main restricted universe multiverse
#######################################
更改源后，sudo apt-get update
?
?
?
?
