A script to enable hidden OSX 'Screen Sharing.app' featuresSource for OSX 'default' command lines: http://lifehacker.com/334759/add-more-functionality-to-leopards-screen-sharing

osx-screensharing-featuretoggle.sh

#!/bin/bash


RESULT_ERROR=1
disp_usage=1
usage()
{
    echo "$(basename $0) [-t|-b] " >&2
	echo "" >&2
	echo "" >&2
	echo "               Enables hidden OSX 'Screen Sharing.app' features" >&2
	echo "" >&2
	echo "  -b           Enable Bonjour Network Browser" >&2
	echo "  -t           Enable Control Toolbar" >&2
	echo "" >&2
    exit
}

#-------------------------------------------------------------------------------
#  Get script options
#-------------------------------------------------------------------------------
while getopts "bth" opt; do
	case $opt in
		b	)	defaults write com.apple.ScreenSharing ShowBonjourBrowser_Debug 1 ; disp_usage=0 ;;
		t	)	defaults write com.apple.ScreenSharing 'NSToolbar Configuration ControlToolbar' -dict-add 'TB Item Identifiers' '(Scale,Control,Share,Curtain,Capture,FullScreen,GetClipboard,SendClipboard,Quality)' ; disp_usage=0 ;;
		h	)	usage
			    exit $RESULT_ERROR ;;
		*	)	usage
				exit $RESULT_ERROR ;;
	esac
done
shift $(($OPTIND - 1))
# positional_arg1=$1
# positional_arg2=$2

[ $disp_usage -eq 1 ] && usage