What was the lineage of Unix under TSS?
-- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf of Timothy Sipples [sipp...@sg.ibm.com] Sent: Thursday, April 16, 2020 2:36 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Any shop use UNIX in a production job? David Crayford asks: >Isn't this all obsolete now? Linux and Windows are used everywhere and I >doubt anybody cares about POSIX certification. Occasionally I bump into a RFP that includes the letters "POSIX" and/or "UNIX." In principle anybody can put anything they want in a RFP. Scott Ford wrote: >Wasn’t z/OS Unix System Services based on Posix ? It’s seems I heard this >sometime ago. MVS OpenEdition achieved POSIX compliance. z/OS is UNIX® certified. POSIX® refers to IEEE Standard 1003.1, and colloquially it means "UNIX-like," but that's a little dangerous. The reason is that getting the POSIX® label requires a submission and certification, whereas it's possible to be "UNIX-like" without certification. Linux, for example, is assuredly "UNIX-like" even though it's neither POSIX® nor UNIX®. http://get.posixcertified.ieee.org/ There aren't too many products that are POSIX® certified these days, although many more were in the past. Evidently a lot of vendors haven't bothered to renew their certificates. The current POSIX® register is available here: http://get.posixcertified.ieee.org/register.html The Open Group solely handles UNIX® certification and participates in the POSIX standardization process as one of the three "Austin Group" parties. https://secure-web.cisco.com/14xnV-zZLpdHVrCvNq7h5u6_w1oW58iBoDpwQEHje1Z6Xc_7v1ZKHLjv-mBfkDQXAbLSZXSU96V9hEQWBfAJZo6o1VqTOFSTvma8H1iC-GkdxBq4qXArTL8QQiE9qxd9etTzl-HdL8s_pGsEi6zIadwjEGzJASYwS8zjY8nZV-hNv-tehUl-1aXgx-2jRNkMV0rsKfjgoaxHlmr_FybwqX80xNp3Ma6R7ceAZ-MvJvoDZkx2tzNffNpwCJOzPT91WUz_BS7BC7XWM5TeuwsNuKYPPJdUzEU5iKzUDpAP8rvF9jDyRpZPXUGnJOxIPzg3fdITrVAOa69sQuv_bPdLr1C_y0zN3rJX1BN7ZBwP_Mu1Ja0iM5xbFcVTNFbUnPiTaLGhfK9eVpzl56okBnHuTPNSBlymCRmwfIsnuHSNsXmGPGhqKbjTOF3veiWm3clHjrH0t81kZexOZeohBt-0j9w/https%3A%2F%2Fwww.opengroup.org%2Fmembership%2Fforums%2Fplatform%2Funix The current UNIX® register is available here: https://secure-web.cisco.com/1VP6zyH5e3F7BOOyUobv5pq4e8Y0dq7A-Bw4pzlv5rAgcsrbHaQktXUL7pClLopFpJVluufe1jGyNNkdb9df6AEb5EqEZphQqDMk7-jQkEq2AH8kgvdxCavJX0aWV9PYpzeH1djqHYTypHud0ZSX1ok3KgKjY5F-Fftj-j972Yd3atG7ZuIB6IDaIQfNch79sDfdPZ3-3696Bbxx8qgdG2-V_Y1BcGzX0qAkf_feFjXbZ3mlMAifK9Ed6Z-A4zX6yQ_jOs5kg4c84dVhQTlZqD4iK1AOqEGRCm2-hl1IO7IAucX57T3VBwhuJhxNDkdtrpjAG9LVsSsnjfbwpXr_RRtc_IWAW45svlgRFX_QIKLFzfk4SFgYBkwRXrEqvQv_yH7ho3HEvd5jKXwpB5Ld-5Idk9mM-RjYSIcxuMaUvOXcyJdIv65ty2ZocPV5vZtUsX0rcJcJYKQ-1fvFlDLmaDw/https%3A%2F%2Fwww.opengroup.org%2Fopenbrand%2Fregister There's a close technical and working relationship between POSIX and the Single UNIX Specification(s), but The Open Group is now the sole grantor of the UNIX® label, based on vendor submissions passing its certification process. Historically, before the certification era, an operating system could have been UNIX basically if AT&T (and maybe the University of California, Berkeley, for a little while) said so. z/OS is at least unusual, probably unique, as a UNIX operating system without some sort of AT&T (Bell Labs) code lineage. - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: sipp...@sg.ibm.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
