C (the programming language) and z/OS UNIX System Services are two separate subjects. I wouldn't conflate the two.
I agree with the comment that "basically everything" uses z/OS UNIX System Services to one degree or another -- and an increasing degree over time. It's an integral part of the operating system, it has been for an awfully long time, it continues to evolve and advance, and there are lots of middleware products that flat out wouldn't run without it. At this point in history I really wouldn't view z/OS UNIX System Services as anything particularly separate, except to the extent you'd view other subsystems as separate like the Communications Server for z/OS, SMF, etc. Why do you ask? If you're asking, "Should I learn more about z/OS UNIX System Services?" I'd probably answer with a question: "Do you want to maintain reasonablly current z/OS skills?" For example, if I were hiring a z/OS system programmer, and during the interview that person said, "I'm an excellent z/OS system programmer, but I refuse to have anything to do with z/OS UNIX System Services," I'd send that person back out the door very quickly. It's a nonsensical statement. My personal opinions. - - - - - Timothy Sipples IBM Consulting Enterprise Software Architect Based in Tokyo, Serving IBM Japan / Asia-Pacific E-Mail: [email protected] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
