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RSS feedsVendors and users could easily recompile their Linux software to temporarily remove modules that may contain SCO copyrighted software, according to tests conducted at vnunet.com's sister title IT Week.
By doing so, users could avoid potential demands by SCO for royalty payments.
Provided that support contracts allow it, modules could be replaced by alternatives that do not infringe SCO's copyrights, ensuring that levels of functionality are maintained.
However, the tactic will not be feasible until SCO itemises the Linux components at issue in its lawsuit with IBM.
Chris Sontag (pictured), senior vice president at the company's SCOsource intellectual property division, said: "It is possible to produce a distribution that does not infringe SCO copyrights."
But he warned that it would be more than just a question of removing a few lines of code.
"There are major elements in the 2.4 kernel. For example, Oracle would not run on a 2.2 kernel and perform effectively," said Sontag.
However, Joe Eckert, vice president of corporate communications at Linux distributor SuSE, insisted that the task would not be too complex. "That code could be replaced within weeks if not days," he said.
But according to experts, it would be impossible to say for certain which applications would be affected until SCO lists the modules that it claims infringe its rights.
In the tests, removing binary emulation modules had no discernible effect on the most popular Linux applications, such as Apache, Sendmail and Linux firewall tools.
IT Week selected these modules because SCO cited similar software in its complaint against IBM in March.
The labs recompiled the kernel on a SuSE Linux 8.2 system, which uses the 2.4.20 kernel, to remove all binary emulation modules.
These modules enable legacy Unix applications to run on Linux servers, including those originally developed for systems compatible with Unix SVR3 and SVR4. Related modules support UnixWare 7.x and SCO OpenServer applications.
Analyst Butler Group has suggested that it is only a matter of time before SCO code is removed entirely from the Linux kernel.
"Even if SCO's claims are proven to be true, that the 2.4 kernel and later do contain Unix code, the kernel will be rewritten," wrote the firm in a recent research note.
"A new kernel will not be long in coming, and SCO can wave goodbye to its expected royalties."
The IT Week labs findings come as US software company Aduva announced its intention to release a tool to root out SCO code and replace it.
Aduva said that it will customise its OnStage 2.0 product so that it can conduct a complete system inventory to identify SCO code and automatically replace it.
The company offers a free Linux health check here.
Get the latest news, views and technology updates in a weekly round up of the Penguin's unstoppable march by signing up to vnunet.com's FREE Linux newsletter here.
See also:
Forum delegates shown "copyright-infringing" Linux code as SCO sets out its case 19 Aug 2003
New twist in saga sees SCO claim US Copyright Act takes priority over GPL 15 Aug 2003
The $3bn lawsuit brought by the SCO Group against IBM will have repercussions for all IT vendors, as well as their users. 01 Jul 2003All Operating Systems
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