apt-move - 4.2.27-6 main

apt-move is used to move a collection of Debian package files into a
proper archive hierarchy as is used in the official Debian archive. It
is intended as a tool to help manage the apt-get(8) file cache, but
could be configured to work with any collection of Debian packages.
.
Running apt-move periodically will assist in managing the resulting
partial mirror by optionally removing obsolete packages, and creating
valid local Packages.gz files. It can also build a partial or complete
local mirror of a Debian binary distribution (including an
``installed-packages only'' mirror).