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SubjectRe: Is there a "make hole" (truncate in middle) syscall?
Mike Fedyk <> writes:

>> I found this paragraph in the man page of GNU cp:
>> --sparse=WHEN
>> always Always make the output file sparse. This is
>> useful when the input file resides on a
>> filesystem that does not support sparse
>> files, but the output file is on a filesys-
>> tem that does.
> So with this, you can create sparse files for an entire set of files
> by just cping them? :)

Yes. It won't query the system for where any potential holes in the
source files might be, though, so if there are large holes, cp will
spend unnecessary time crunching through them.

Måns Rullgård

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