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OSX - How to do an md5check sum on a downloaded app file

Posted on 2010-01-10
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Last Modified: 2013-11-12
After downloading an application  file for a MAC (OS X Leopard), for example mysqlworkbench.app, I would like to verify its posted md5 check sum.

The normal way in a MAC is to open terminal and type:
openssl md5 [filename]

However this will not work on an app file because it is an archive and openssl fails with the message : error 0200B015:system library:f read:is a directory:bbs_file.c:167 and other errors

Question: How can one check the downloaded .app file?

Thanks
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Question by:dbworker1
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by:
jazzIIIlove earned 1000 total points
ID: 26278799
Hi there;

What about this program?
http://www.apple.com/downloads/macosx/automator/md5checksum.html

Best regards.
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by:gktech
gktech earned 1000 total points
ID: 26278837
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Author Comment

by:dbworker1
ID: 26280322
same problem. The MD5 utility errors out and tells you it is a directory.

You can open the .app and display the contents, then calculate the md5 checksum of the actual (main) executable but this, of course, gives a different check sum.

There has to be a way since the check sum is published. Next I will copy the file to windows and try to checksum it there.
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Author Comment

by:dbworker1
ID: 26280398
Similar problem in Windows. But in re-downloading the installation file it was clear that Apple make the install very easy and transparent so I was not testing the downloaded file but the installed files, hidden by the install mechanism (just paste the d/l file into the applications folder). Once I found and tested the actual downloaded files then the built in MD5 utility worked correctly.

So it was an issue of not understanding how simple the MAC works.

Split points assigned since the suggested utilities. are a nice shell for the Apple MD5 utilities
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