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- The poor man's daily snapshot, glastree builds live backup trees, with
- branches for each day. Users directly browse the past to recover older
- documents or retrieve lost files. Hard links serve to compress out
- unchanged files, while modified ones are copied verbatim. A prune
- utility effects a constant, sliding window.
- Satoru Takabayashi has written a similar program, in Ruby, pdumpfs.
- Inspired by Plan9, of course.
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