sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia -volume /Volumes/Untitled -applicationpath /Applications/Install\ OS\ X\ Mavericks.app -nointeraction
createinstallmedia: invalid option -- o
Usage: createinstallmedia --volume <path to volume to convert> --applicationpath <path to Install OS X Mavericks.app> [--force]
Arguments--volume, A path to a volume that can be unmounted and erased to create the install media.
--applicationpath, A path to copy of the OS installer application to create the bootable media from.
--nointeraction, Erase the disk pointed to by volume without prompting for confirmation.
Example: createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install OS X Mavericks.app
antares-MacBook-Air:~ antares$