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Battle of the Xs

have huge implications for the open software movement and the increasingly bitter IBM-Microsoft competition, The SCO Group Inc. (Lindon, Utah) has upped the ante in its lawsuit against IBM Corp. (Armonk, N.Y.). IBM stands accused, in a suit SCO originally filed in March, of adding Unix System V source code, which SCO believes it owns, to Linux, an open-source operating system that can be obtained free of charge. In an amended brief, filed with the U.S. District Court for the District of Utah, on 16 June, SCO raised the amount of requested damages to US $3 billion from $1 billion. It also asked for a permanent injunction requiring IBM to destroy all copies of Unix, including AIX, IBM’s flavor of Unix installed on many of the company’s products. IBM has denied all charges. In a curt press release issued 16 June, it accused SCO of attempting to create fear, uncertainty, and doubt among IBM’s customers and the open-source community. “IBM’s Unix license is irrevocable, perpetual and fully paid up,” the release said. At the heart of the dispute are IBM’s increasingly active support for Linux and Linux’s growing toehold in the segment of the server and workstation industry that runs on IA32 (Pentium) and IA64 (Itanium) microprocessors from Intel Corp. (Santa Clara, Calif.). Since SCO earns its bread and butter selling Unix to manufacturers of Intel-based servers and workstations, it feels threatened by Linux’s growing popularity. And it largely blames IBM for taking Linux from a PC operating system to one that can run on the enterprise-grade computers that store corporate records and databases and route intranet traffic. “IBM has engaged in a course of conduct that is intentionally and foreseeably calculated to undermine and/or destroy the economic value of Unix anywhere and everywhere in the world,” said SCO in the suit filed on 6 March.