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It's possible to mount a compressed archive in Linux as if it were a directory using tools like archivemount or gvfsd-mount, both of which depend on libarchive. This only works for "proper archives", though; collections of multiple files with a directory structure. Is there a way to mount single compressed files? In other words, mount a .bz2 as opposed to a .tar.bz2.

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@slm: That link does not answer the question. Zip files are archives of multiple files, bz2 files are not. Are you sure it can be used with bz2 files? – endolith Nov 22 '13 at 14:59
Ah, I missed that last sentence of your Q. I'm not sure it can, sorry. – slm Nov 22 '13 at 15:03

Why, yes there is, sort of. There's a FUSE filesystem called fuseflt that does almost what you want. Rather than mounting a single file, it mounts a directory. Within the mount, you can set up arbitrary filters. The documentation gives your specific example: mounting a directory full of zipped files so that they appear to be unzipped.

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That looks promising, but I have yet to try it. – endolith Oct 16 '09 at 14:01

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