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Chapter 6 Setting Network Preferences 81
Each item on the list is a piece of information stored by configd, sorted by type. Setup
indicates information that has been read from a configuration file. State indicates
information that represents the actual state of the computer. File indicates stored
information as of the last time the configuration file was updated.
Using scutil, you can view data in the keys. First you must get the data, and then you
can show the data. For example:
> get State:/Network/Interface/en0/IPv4
> d.show
scutil
stores the information from the get command in a local dictionary variable
called d. You can also watch or monitor a variable, such that if its state changes, scutil
will alert you. To quit the scutil session, enter quit at the prompt.
> quit
You can also manage system configuration parameters from within scutil using the
--get and --set options. These provide a means of reporting and updating a select
group of persistent system preferences, including ComputerName, LocalHostName, or
HostName.
To set the hostname of a system:
$ sudo scutil --set HostName
mycomputer.mac.com
To get the hostname of a system:
$ scutil --get HostName
mycomputer.mac.com
See the scutil man page for more information or enter help at the scutil prompt.
Changing Network Locations
A network location contains all of the network configuration settings for a specific
network, such as Ethernet, AirPort, FireWire, or Bluetooth. Each location has a separate
set of network settings.
Mobile users who switch between networks have multiple locations set up on their
computer and may need to switch between locations quickly. scselect allows you to
access these configuration sets or locations.
Parameter Description
mycomputer.mac.com
This is the new hostname value you wish to set.