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Tip of the Trade: apt-proxy
If you're running more than one Debian or Ubuntu computer on your network, you can speed up downloads and updates considerably by using a local package mirror. Packages need only be downloaded once to be available to all of your local clients.
|Creating a local Debian mirror is a snap with apt-proxy.|
apt-proxy makes it easy to set up your own local mirror. All you do is install it in the usual way, with apt-get install apt-proxy, then configure the other Debian or Ubuntu hosts to use it instead of remote package repositories. apt-proxy does not create a complete Debian mirror this would require about 30 gigabytes of storage for a single processor type, about 100 gigabytes for the whole works, and significant time and bandwidth to keep it updated. apt-proxy is a caching proxy, so whenever one of your local machines installs a new package, apt-proxy caches it to serve future local requests for the same package.
apt-proxy is pretty smart and and efficient. You can import the contents of your existing apt cache to give it a good start. It automatically keeps its archive current, and weeds out old junk. It listens to port 9999, so clients must have their /etc/apt/sources.list files configure to use it like this:
deb http://[local-server]:9999/debian stable main contrib non-free deb-src http://[local-server]:9999/debian stable main contrib non-free deb http://[local-server]:9999/security stable/updates main contrib non-free
apt-proxy is completely configurable to use any remote repositories and update at specified intervals. You can also limit its download bandwidth. Visit apt-proxy.sourceforge.net for more information.