Common UNIX Printing System(tm) - common files The Common UNIX Printing System (or CUPS(tm)) is a printing system and general replacement for lpd and the like. It supports the Internet Printing Protocol (IPP), and has its own filtering driver model for handling various document types. This package provides common files for CUPS server and client packages. The terms "Common UNIX Printing System" and "CUPS" are trademarks of Easy Software Products (www.easysw.com), and refer to the original source packages from which these packages are made.