System V Release 4.0 versus BSD

[Guy Harris]

>I don't see any signs at all that commercial vendors are going to
>distribute systems based on 4.4BSD rather than SVR4.  Some may ship
>Mach-based systems, but they will be at a competitive disadvantage.

Well, it'll depend on how they use the Mach base.  If they implement an
S5R4 interface atop it, incompatibility probably won't provide any
competitive disadvantage (especially if they make it binary-compatible
as well).