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Transparently save disk space with CompFUSEd under Linux....
CompFUSEd is designed as an overlay filesystem. This means that it takes an existing "base" filesystem and presents the same filesystem with some modifications. In this case the modification is to (de)compress the files. CompFUSEd takes the data that is written to it, compresses it, and passes it off to an underlying "base" filesystem for storage. When you read a file through compFUSEd, it will read that file from the base filesystem and decompress it before giving it to you. That means applications can use a compFUSEd filesystem without knowing anything about compression or even that the data is compressed when stored on disk.
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