ubuntu 源

源的位置：/etc/apt/source.list ?(更改前最好备份)

163的源：

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#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

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更改源后，sudo apt-get update

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