Q: command line input " install MAC OSX 10.9 Mavericks" was accepted what next?

Those are not choices. Those are the proper use of the command line it thinks you meant. But the command you entered is invalid. Make life simple. Start up the computer normally. In the Applications folder look for the Mavericks installer application. Double-click on the icon.

Note that if you have a PowerBook running Leopard, then you cannot upgrade further. If you have a real MacBook or MacBook Pro, then you have other options. But you haven't provided sufficient or correct information to help you further.

If you don't know the model, find the Serial# & use it on one of these sites, but don't post the Serial# here...

Using this serial number locator is way better than Chipmunk, and more secure:

https://selfsolve.apple.com/agreementWarrantyDynamic.do

http://www.chipmunk.nl/klantenservice/applemodel.html

http://www.appleserialnumberinfo.com/Desktop/index.php

How to find the serial number of your Apple hardware product...

http://support.apple.com/kb/HT1349

If you don't know the model, find the Serial# , but don't post the Serial# here...

Use this serial number locator:

https://selfsolve.apple.com/agreementWarrantyDynamic.do

FYI - If your "PowerBook" is a PowerPC-based Mac, you can't install any version of Mac OS X after 10.5.8.  Starting with Snow Leopard (10.6), the OS is Intel-only, for Intel-based Macs.  Even if you somehow installed it, it does not run on PowerPC Macs.

Also, unlike Windows, Apple advances the state of its OS and integrated software with each major release, to match advances in hardware.  Your PowerBook (if that's your Mac) only has a single-core PowerPC G4 processor, which is WAY too slow to run Mavericks, even if Apple compiled a version for PowerPC Macs.  With each major OS X release, old Mac models are left off list of supported Mac models for this reason.

Leopard (10.5) is optimized to run well on supported PowerPC Mac models.  Be sure to try TenFourFox

http://www.floodgap.com/software/tenfourfox/

for an up-to-date web browser for PowerPC Macs that is equivalent to the latest version of FireFox.

In the upper left corner of the menubar you should find an apple shaped icon. Click on it and then select About This Mac from the menu. it should provided the needed information for now. in particular you want to see if you have a PowerBook which is a PPC model or a MacBook/MacBook Pro which is an Intel model. 10.5.8 is the last available version of OS X for a PPC model.

If "the island" means Hawaii, no, although there are no doubt many folks there with my (quite common) Japanese last name.

Most PowerPC Macs cannot start up from an external drive that connects to USB, only FireWire.

For a PowerPC Mac (unlike Intel Mac) the correct partition scheme for a startup drive is Apple Partition Map, not GUID Partition Table.

Off I go to download Leopard 10.5

That's actually illegal, so you should not discuss doing so on the discussion forum that Apple owns and operates.  Since you can't create a startup installer USB stick for Leopard that works on PowerPC Macs, you really need a retail Leopard installation disc, so you can start up from the optical drive and run the installation normally.

NOTE:  The Leopard installation disc needs to be the type Apple sold separately, in a retail box, not a disc that came with another Mac model.  It is black (not grey) with a big "X" on it.