I forget this often and find it useful at times to see the contents of my preference file. One mistake I often make is not to remove the file extension (.plist).
defaults read /Library/Preferences/com.apple.loginwindow
I am not a big fan of forums but this detailed entry helped me:
How to view plist files?
The main reason I was doing this was to keep preferences on my two laptops in sync and wanted to make sure to see if this is the right directory to SugarSync.