With regard to Tony's first paragraph and the first sentence of the second sentence, agreed absolutely. You could not have said it better.
With regard to Tony's last sentence, yes, that's a bar bet for you: "which of these is UNIX: Linux or z/OS?" (It's like "what NFL team plays its home games in NY?" The answer is Buffalo Bills.) UNIX is a trademark of X/Open Company Limited. Something cannot be sort-of UNIX. A product either conforms, is certified, and is licensed for the trademark, or it is not. z/OS is. http://www.opengroup.org/openbrand/certificates/1199p.pdf Or as Tony says in many fewer words, z/OS *is* UNIX. Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:[email protected]] On Behalf Of Tony Harminc Sent: Wednesday, December 07, 2016 2:28 PM To: [email protected] Subject: Re: DDs in USS? <snip> I meant it in the same sense that Kernel Don use to say it: there is no difference from a program's point of view. Obviously there are differences in and gross omissions from the several human interfaces to z/OS with their different roots. But a program generally need not be any more concerned about how it got started by the user than it need worry itself about whether it's running in batch or TSO. To be sure there are some differences, but "MVS Classic" services and all the UNIX services are equally available in all environments. Many people, even in 2016, still hold a notion that there are two different programming environments, and/or that z/OS has some kind of "UNIX emulation" in it. z/OS *is* UNIX. <snip> ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
