title: How to script to turn off mac window mirroring,
body: <p>So I have 150+ users who are using a mac mini, El Capitan.
  I use deploy studio to make an image so I can clean out the junk every so often, on this image I have settings and such that I can regulate, I am not sure how to make it so the first time someone logs in, the windows are not mirrored, (everyone is using dual monitors). Is this possible?
  I can make an Apple script to do it just fine, but that isn't acceptable in this case.</p>
  
  <p>Question : How do I set the preference/setting of "mirror windows" to be automatically or always unchecked? </p>