Ubuntu 本地源地址
修改源步骤
cd /etc/apt
sudo mv sources.list sources.list.bak
sudo vim sources.list
根据各自的版本，加入以下相应内容
最后更新软件源 sudo apt-get update
14.04 （持续更新中）
deb http://192.168.41.191/ubuntu14.04/ trusty main restricted universe multiverse
deb http://192.168.41.191/ubuntu14.04/ trusty-security main restricted universe multiverse
deb http://192.168.41.191/ubuntu14.04/ trusty-updates main restricted universe multiverse
deb http://192.168.41.191/ubuntu14.04/ trusty-proposed main restricted universe multiverse
deb http://192.168.41.191/ubuntu14.04/ trusty-backports main restricted universe multiverse
12.04 (可用但不再更新)
deb http://192.168.41.191/ubuntu12.04/ trusty main restricted universe multiverse
deb http://192.168.41.191/ubuntu12.04/ trusty-security main restricted universe multiverse
deb http://192.168.41.191/ubuntu12.04/ trusty-updates main restricted universe multiverse
deb http://192.168.41.191/ubuntu12.04/ trusty-proposed main restricted universe multiverse
deb http://192.168.41.191/ubuntu12.04/ trusty-backports main restricted universe multiverse
