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After all the fuss over Mac Defender, I thought it might be a good idea to disable the open safe files option in safari for the users in our network. I'd like to do this with the 'Send Unix Command' via Remote Desktop.

Safari Preferences

How can I use terminal to disable this preference in Safari?

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Also a really good idea to uncheck this everywhere as a new version "Mac Guard" now can run as a standard user, no need for admin password for installing. – ConstantineK May 27 '11 at 2:54
up vote 5 down vote accepted

You can use the defaults application to change the preference for this using the following command:

defaults write AutoOpenSafeDownloads 0
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