And MVS was proudly described as "the FIRST POSIX-certified system", whatever that means (not dissing/arguing with it, just sayin' that, like most things, it probably has some nuances). Which made and still makes me laugh, since of course then (as, to some extent, now) that part of the universe reviled IBM.
https://en.wikipedia.org/wiki/MVS#MVS/ESA has some relevant information. -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Seymour J Metz Sent: Wednesday, January 22, 2025 12:02 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: OMVS Originally there were two Unix certifications: POSIX was IEEE and adopted as a FIPS while the other was from what is now The Open Group. I believe that the two specifications have merged. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
