sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #备份
sudo
vim
/etc/apt/sources
.list
#修改
sudo
apt-get update
#更新列表
阿里源，将默认的源全部删除掉
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