PSI problem for MatLab processing

I am New in these area, but i have processed for PSI and SBAS, my difficulty is creating the Patch through the installation of StaMPS 4.1beta on Mac and Ubuntu

Have you successfully installed stamps in Ubuntu?

I could say yes i have install StaMPS in Ubuntu from the response i got from the next step as shown in the screen shot attached. Though i still got stock with the response like “calamp: command not found”. i am not sure if it is from the installation or something else, pls help me out. rofiatulainiyah