I'll dispute that. MVS manages hardware, dispatching, memory, DASD* and I/O. USS "rides" on the back of those. I grant that USS is Unix (and Posix), but it's practically a virtual machine on top of MVS. Contrast with z/Linux.
sas *... i.e. it's closer to the hardware anyway. USS filesystems use MVS datasets for containers. On Mon, Apr 13, 2020 at 11:17 AM Charles Mills <[email protected]> wrote: > Actually, I considered asserting that there is no such thing as running on > z/OS NOT under UNIX. <g> > > I believe that "z/OS is UNIX" is a true statement. > > Most of us in this group think of z/OS as a bunch of traditional stuff > with USS glued on top. From the Open Group's legal point of view, z/OS is > UNIX with some extra, proprietary stuff thrown in (as is Windows Server). > > USS is not something you "run under." USS is a set of interfaces into > various z/OS services. As is JCL. As is LE. As is TSO. > > Charles ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
