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What’s the best way to do this. Apple pushed out the fix just now. How can I tell which of my Macs has installed it?

This will check it for sure:

#!/bin/bash
openDV=$(what /usr/libexec/opendirectoryd)
isRUI=$(echo $openDV | grep -c 'opendirectoryd-483.1.5')
isRUIP1=$(echo $openDV | grep -c 'opendirectoryd-483.20.7')
if [[ $isRUI -gt 0 ]]; then
    echo "Root security update IS installed"
elif [[ $isRUIP1 -gt 0 ]]; then
    echo "Root update IS installed"
else
    echo "Root update missing, please update immediately!"
fi

exit 0

Hope that helps.

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