sudo "/Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia" --volume /Volumes/Mavericks/ --applicationpath "/Applications/Install OS X Mavericks.app"
Note the double hyphens before the keywords. The quotes just make it easier to read.
sudo /Applications/Install\ OS\ X\ Mavericks.app/Contents/Resources/createinstallmedia –volume /Volumes/WHATEVER_DISK –applicationpath /Applications/Install\ OS\ X\ Mavericks.app –nointeraction