not being a Mac expert, I'm only guessing, but could you use a bundle
that used something like
mkdir /somedir/macver
rm /somedir/macver/*
echo test> /somedir/macver/$(sw_vers -productVersion)

in a bundle that you force run at the start, then check for the
presence of /somedir/macver/10.9.5 for example in your normal bundle?


Shaun Pond
newly reminted as a Knowledge Professional