1. Back up original source files
sudo cp/etc/apt/source.list/etc/apt/source.list.bak
2. Edit Source list file
sudo vim/etc/apt/source.list
3. Delete the original list and add the following
The following is the apt-get source for Aliyun Ubuntu 14.04
Deb Http://mirrors.aliyun.com/ubuntu/trusty main restricted universe multiverse Deb http://mirrors.aliyun.com/ubuntu/ Trusty-security main restricted Universe Multiverse Deb Http://mirrors.aliyun.com/ubuntu/trusty-updates main Restricted Universe Multiverse Deb http://mirrors.aliyun.com/ubuntu/trusty-proposed main restricted universe Multiverse Deb Http://mirrors.aliyun.com/ubuntu/trusty-backports main restricted universe multiverse deb-src http:// Mirrors.aliyun.com/ubuntu/trusty main restricted universe multiverse deb-src http://mirrors.aliyun.com/ubuntu/ Trusty-security main restricted universe Multiverse deb-src Http://mirrors.aliyun.com/ubuntu/trusty-updates main Restricted Universe Multiverse deb-src http://mirrors.aliyun.com/ubuntu/trusty-proposed main restricted universe Multiverse deb-src http://mirrors.aliyun.com/ubuntu/trusty-backports main restricted universe multiverse Deb http:// Mirrors.aliyuncs.com/ubuntu/trusty main restricted universe multiverse Deb Http://mirRors.aliyuncs.com/ubuntu/trusty-security main restricted universe multiverse Deb http://mirrors.aliyuncs.com/ubuntu/ Trusty-updates main restricted Universe Multiverse Deb Http://mirrors.aliyuncs.com/ubuntu/trusty-proposed main Restricted Universe Multiverse Deb Http://mirrors.aliyuncs.com/ubuntu/trusty-backports main restricted universe Multiverse deb-src http://mirrors.aliyuncs.com/ubuntu/trusty main restricted universe multiverse deb-src http:// Mirrors.aliyuncs.com/ubuntu/trusty-security main restricted universe multiverse deb-src http://mirrors.aliyuncs.com/ Ubuntu/trusty-updates main restricted universe multiverse deb-src http://mirrors.aliyuncs.com/ubuntu/trusty-proposed Main restricted universe Multiverse deb-src http://mirrors.aliyuncs.com/ubuntu/trusty-backports main restricted Universe Multiverse
4. Run sudo apt-get update updates source files other
1. Run command substitution source
Sed-i ' s/archive.ubuntu.com/mirrors.ustc.edu.cn/g '/etc/apt/sources.list