hostname$ cd /System/Library/PrivateFrameworks/Apple80211.framework/Versions/A/Resources/
hostname$ ./airport -h

/System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -restart -agent -console

bless --device /dev/disk0s3 --setBoot

To change the SWS catalog, use the following, followed b a command line based software update

$ cd /Library/Preferences
$ sudo defaults write /Library/Preferences/com.apple.SoftwareUpdate CataogURL http://server.example.com:8088/
$ softwareupdate -i -a