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    SubjectRe: Is there a "make hole" (truncate in middle) syscall?
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    > I was thinking of making a toy that would run periodically against a
    > seldom-changed filesystem, find runs of zeroes of a certain minimum
    > size, and turn 'em into holes. The fragmentation might not be worth
    > it, though...

    "cp" does that already. Hunt for sparse files, copy them and move the
    new file to the old location.
    There used to be an installer (Slackware, I think) back in very old
    days which did this to every binary after untarring...

    Olaf

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