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How to get Powershell to compare MD5 hashes of folders

Posted on 2014-12-11
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Last Modified: 2014-12-12
Hi
 I am trying to get MD5 hashes of folders with sensitive information . I have found the link below. However when l run a test to compary the folders. I do not get any response from Powershell. I have upgraded the version of Powershell to version 3 and  I have imported the PSCX modules to enable it to work. I would appreciate any assistance.

http://blogs.technet.com/b/heyscriptingguy/archive/2012/05/31/use-powershell-to-compute-md5-hashes-and-find-changed-files.aspx
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Question by:Phil Mapfumo
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6 Comments
 

Expert Comment

by:iftech
ID: 40493648
you wont get much help without showing the code you are trying to use.
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Author Comment

by:Phil Mapfumo
ID: 40493659
Sorry here is the code l am trying to use. I have tried to run it with on 2 test folders  with similar data but l don't get a  response, Powershell does not give out any errors or return any information

PS C:\> Compare-Object -ReferenceObject (dir c:\ref -Recurse | Where-Object {!$_.psis
 
container } | get-hash) -differenceObject (dir c:\changed -Recurse | Where-Object {!$
 
_.psiscontainer } | get-hash)
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Accepted Solution

by:
iftech earned 1500 total points
ID: 40493709
I did some quick tests and my results are as follows.  When the two directories have exactly the same contents, there was no output at all. I changed a single file and the output is as expected.

I would recommend double checking your folders, make sure you have contents that are different.
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Author Comment

by:Phil Mapfumo
ID: 40494342
Okay thanks l will run a test as well with sightly different contents, however is there a way to see if the MD5 check is still running as l have a few folders that l have  copied that have similar data but contain terabytes of data, that l need to verify contain the same data.
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Expert Comment

by:iftech
ID: 40494371
i suppose if you are comparing TB's of data you should see powershell.exe in your task manager using some resources
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Author Comment

by:Phil Mapfumo
ID: 40495864
I have managed to run the command with slightly different data and I did get a response,  many thanks for that!
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