Four new versions of Linux have been certified to comply with guidelines set down by the Linux Standard Base, a group trying to make it easier for software to run on different companies' versions of the Unix clone.

Red Hat 8, SuSE 8.1, SCO Group OpenLinux 3.1.1 and MandrakeSoft 9 ProSuite all comply with the LSB's guidelines, according to the Free Standards Group, which oversees the LSB certification process.

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