As I mentioned in parentheses, the advantage of using the checksumming technique is that the directories don't need to be accessible from the same machine.
Whether that matters here, I don't know, but I figured it might perhaps be useful to someone, sometime.
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As I mentioned in parentheses, the advantage of using the checksumming technique is that the directories don't need to be accessible from the same machine.
Then I'd use something like rsync -rcn directory1 remote:directory2
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The checksumming approach is still more flexible.
Example scenario: a friend phones you for help with a software problem. At some point while discussing the issue, you'd like to verify that s/he is actually using the same versions/files, because you can't replicate the problem on your side. So, you create a checksums file of the installation tree and email it to your friend, who can then run the verification without needing any access to your machine whatsoever.
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