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APT
From dankwiki
The package manager for Debian and its derivatives. Raptorial is a reimplementation of portions of APT.
Config
Dump the config via apt-config dump.
To disable retention of downloaded packages in the archive directory, add APT::Keep-Downloaded-Packages "false"; to the config. Note that the Binary::apt::APT::Keep-Downloaded-Packages variable only applies to the apt binary, not e.g. apt-get.