Batch processing and returning results

Dear all,

I know this isn't the perfect forum for this, so feel free to refer me
elsewhere, but I would like to take an upload file from a user, perform a
fairly lengthy batch process on it, and then make the results (a single
file) available for a user at a later time, perhaps notifying the user by
email.  I can envision uploading the file to a tmp directory, running the
process there, and then allowing the user to get the results from the same
place at a later time.  Of course, I don't need the user to know any of this
and would just serve up the file in a nice HTML wrapper based on a unique
key.  Any suggestions on how to go about this?  I'm particularly interested
in a "tutorial" like thing or examples.

Thanks,
Sean
-- 
Sean Davis, M.D., Ph.D.
National Institutes of Health
  Postdoctoral Research Fellow
    National Human Genome Research Institute
  Clinical Fellow
    National Cancer Institute
Johns Hopkins University
  Clinical Fellow
    Department of Pediatric Oncology
--


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