
Chapter 8 Client Management Overview 129
Degrees of Permanence
When you define preferences, you choose to manage them Always or Once; they are
Never-managed by default.
• Always causes the preferences to remain in effect until you change them on the
server. Well behaved Mac OS X applications will also disable the setting of Always
preferences by the user. You can use the Always, for example, to make sure users
can’t add or remove Dock items.
• Once is available for some preferences. It’s a quick and easy way to set up default
preferences without managing them. For example, you could set up a group of
computers to display the Dock in a certain way the first time users log in. A user can
change preferences you’ve set to Once, and the selected changes always apply to
that user.
In the Overview Preference panes, you can’t set the following preferences to
Once: Applications, Finder (Commands), Mobile Accounts, Printing, System
Preferences, Login (Scripts, Login Window, and Options), and Energy Saver. For these
preferences you must choose either Always or Never.
• Often applies only to the Preference Editor (Details view). Often settings are like Once
settings, but are applied at every login and after the computer is connected or
disconnected from the network. These are most useful for application settings that
do not disable the Human Interface for Always Preferences.
• Never lets a user control his or her own preferences. However, some preference
settings, such as Accounts and Date & Time, require a local administrator’s name and
password before changes can be made. Never also means that the preferences are
not managed at this account level, but may be managed at a higher level of the
hierarchy.
Komentáře k této Příručce