Setting up the environment variables for the postscript printer in UNIX To set up the environment variables for the Postscript Printer in UNIX Log in to http://[mscmhost:port]/ibm/console. Select Environment > Websphere Variables. Click new and add this variable: DISPLAY and indicate this value: localhost:0.0. Navigate to Application servers > <servername> > Process Definition > Java Virtual Machine. Under Generic Arguments Text Box, type Djava.awt.headless=true. Save your changes. Add the Postscript Printer, seeAdding printers. Map the printer to the appropriate location, see Mapping printers to locations.