Binary package “ghostscript” in ubuntu oneiric

interpreter for the PostScript language and for PDF

 GPL Ghostscript is used for PostScript/PDF preview and printing.
 Usually as a back-end to a program such as ghostview, it can display
 PostScript and PDF documents in an X11 environment.
 Furthermore, it can render PostScript and PDF files as graphics to be
 printed on non-PostScript printers. Supported printers include common
 dot-matrix, inkjet and laser models.