включение и выключение VNC через консоль на Mac OS X

Включение Screen Sharing:
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -activate -configure -access -on -clientopts -setvnclegacy -vnclegacy yes -clientopts -setvncpw -vncpw пароль -restart -agent -privs -all

Выключение Screen Sharing:
sudo /System/Library/CoreServices/RemoteManagement/ARDAgent.app/Contents/Resources/kickstart -deactivate -configure -access -off

Источники:
http://technotes.twosmallcoins.com/?p=279
http://wiki.zs64.net/Mac_OS_X