rational test workbench - Install STworkbench on Linux -

i trying install stworkbench on ubuntu 12.04 error below:

************************************************************************ * looks trying install on ubuntu system              * *                                                                      * * not officially supported, can made work            * *                                                                      * * @ following links , carry out steps listed there     * * , rerun script --debian flag                    * *                                                                      *               http://stlinux.com/install/ubuntu                        * *                                                                      * ************************************************************************ 

i followed installation guide http://www.stlinux.com/devel/stw.

what can fix this?

have tried add "-d" in install command:

$ ./install -d stworkbench