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multiple file hash in a single read

  • To: mathgroup at smc.vnet.net
  • Subject: [mg132137] multiple file hash in a single read
  • From: inner.mitochondrial.membrane at gmail.com
  • Date: Sun, 22 Dec 2013 05:52:25 -0500 (EST)
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  • Delivered-to: l-mathgroup@wolfram.com
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Dear Group

To get CRC32 and MD5 ... hash of a file, I could use

({FileHash[#,"CRC32"],FileHash[#,"MD5"], ...})&/@fileList

but it doesn't look smart because each file is read twice, a first time to compute CRC32 and second one for MD5, etc..

Any better way ?

A simple way to efficiently parallelize this peculiar task over a multicore cpu would be very welcomed also.

Thanks !!

running:

Mathematica 8.0.1
Win Xp ver. 5.1.2600
intel quad core q9400 2.66 Ghz
4 Gb ram



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