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The Single UNIX Specification
A single set of APIs supported by every UNIX system.
Shifted the focus from incompatible UNIX system product implementations to compliance to a single set of APIs.
If an OS meets the specification and commonly available applications run on it, then it is open.
In the next few slides we will look at the
Single UNIX Spec version 2 and then the Version3
(At the moment LSB is aligned with the Version 2 spec)