

Files with states such as "stat64", "open", and "getattrlist" are just being opened for reading, but files with states of "chmod" or "rename" are being modified.

However, I was able to use Automator to record a workflow that opens System Preferences, goes to the Displays pref pane, and adjusts the brightness slider. I couldn't find anything pertaining to screen brightness. Having said that, I changed the brightness of my iMac running 10.7.3, then went looking for changed plist files in the directories listed above.

So, for best results, you should modify the settings indirectly through System Preferences itself. The fact that Apple made ~/Library hidden by default on Lion is a good indication that the contents of this directory are not intended to be modified by typical users. plist files), and the way it works could change without warning in a future version of OS X. It's not documented publicly by Apple, is not intended for users to manipulate directly (by editing the. Also, this is what could be called an implementation detail. I say "some" because I have found settings in these locations before, but have not done an exhaustive search. Some system-wide settings are in /Library/Preferences, and some user settings are in ~/Library/Preferences.
