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A relative who has difficulty with mouse control keeps inadvertently removing items from his Dock. I enabled Parental Controls to prevent him from doing so, but Parental Controls has a bug that prevents access to secure websites, including any banking site.

How do I lock the Dock so that it cannot be modified, without making use of Parental Controls?

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up vote 0 down vote accepted

I found an answer on Apple Support Communities:

defaults write contents-immutable -bool true; killall Dock
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