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Can GNU Ever Be Unix?

An anonymous reader writes "The question isn't whether Linux can be certified as Unix. At least some distributions no doubt can. But who would pay for it? And is it worth the trouble? Jem Matzan asks these questions on NewsForge, and reminds us that the Open Group, not SCO, owns the Unix trademark,"

28 of 217 comments (clear)

  1. The *real* question is ... by ggvaidya · · Score: 5, Insightful

    can Unix ever be *nix?

    Seriously, for all practical purposes, GNU + Linux is setting the trend now. Ask IBM, Novell, SCO ...

  2. Why? by lphuberdeau · · Score: 5, Insightful

    Is there really a good reason why would GNU be considered as UNIX officially? GNU has it's own credibility. What is UNIX anyway? Does anyone have a concrete definition of what UNIX is right now (no historical reasons, not the fact that the filesystem starts with /).

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    1. Re:Why? by Anonymous Coward · · Score: 5, Informative

      Is there really a good reason why would GNU be considered as UNIX officially? GNU has it's own credibility. What is UNIX anyway? Does anyone have a concrete definition of what UNIX is right now (no historical reasons, not the fact that the filesystem starts with /).

      The UNIX specifications (93, 95, 98 and 03) specifically define what can be called a UNIX. Before then (each number is a year btw), I believe all you can do is combine all the generally accepted unix based systems (UNIX, BSD, AmigaOS, Xenix, etc) and accept that there was a time when there was no really accepted 'standard' and everyone just did thngs a similar way

    2. Re:Why? by k4_pacific · · Score: 5, Insightful
      The Unix trademark is allowed on anything that confroms to several standards laid out by the Open Group who owns the Unix trademark. Linux on X86 won't comply becuase some of the errno codes are incorrect, being based on Minix, which also uses incorrect values. GNU/Linux for other platforms could qualify as they are, but again, GNU/Linux seems to be evolving as its own standard which seems to be more widely supported because of the freeness and wide availability of Linux.

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    3. Re:Why? by alangmead · · Score: 4, Informative

      Before the Open Group had the trademark and developed the certification process, AT&T held the trademark and might allow AT&T source licensees to use it. In the later years, they had a certification process that became the initial Open Group certification. When AT&T owned it, anything marked as Unix had some amount of AT&T code as its base. BSD hadn't still contained AT&T code, the Net2 release was in 1994, so all commercial BSD based systems (older SunOS, NeXT, older SGI, etc.) were derivatives of a common code base . Xenix was a based on an early Bell Labs release. (I don't know where the reference to AmigaOS came from.)

      The AT&T conformance was mostly to prove that when vendors made local modifications, they didn't mess anything up.

  3. Would have to then be GIU/Linux by Anonymous Coward · · Score: 5, Funny

    GNU = GNU's Not UNIX...

    Have to change that to say GIU Is UNIX :p

    1. Re:Would have to then be GIU/Linux by aled · · Score: 5, Funny

      No, no! RMS will tell you it is GNU/Unix.
      Wait... GNU/Unix=GNU is Not Unix/Unix=(GNU is not Unix) is not Unix/Unix... Stack Overflow/Divide Error... my... head... hurts...

      --

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    2. Re:Would have to then be GIU/Linux by Anonymous Coward · · Score: 5, Funny

      It is very simple:
      GNU/Unix = Gnu is Now Unix / Unix (using the new expansion of GNU)
      Unix/Unix = 1
      => GNU/Unix -> Gnu is Now.
      Takeover of the world accomplished!

    3. Re:Would have to then be GIU/Linux by xSquaredAdmin · · Score: 5, Funny

      Or...

      GNU/Unix
      = (GNU is not Unix)/Unix
      = GNU is not

      Thus, we can see that if GNU became Unix, GNU would not be. :p

      --
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  4. Maybe we should just ask SCO by nicholaides · · Score: 4, Funny

    Can GNU ever be unix?

    I don't know. Maybe we should just ask SCO. They would probably have a reasonable opinion.

    --
    http://ablegray.com
  5. Who cares? by Ianoo · · Score: 4, Insightful

    If it's "close enough", surely big business are going to do more research than just look at whether it's been certified by The Open Group just so the Linux community can use its trademark?

    The problem, as well, is what to certify. There are so many combinations of kernel, drivers, libc, userspace utilities and windowing systems that any certificate could well be rendered useless.

    For example, if IBM paid for SuSE to get certified, would that apply to RHEL or Debian, if they were using slightly different kernel versions or different kernel patches as is often the case?

    1. Re:Who cares? by Zeinfeld · · Score: 4, Interesting
      Who cares if Linux is Unix at this point? We are rapidly approaching the point at which UNIX is a Linux-like operating system rather than Linux being a UNIX-like operating system.

      I have been saying that for several years now. UNIX is all but dead. The only commercial UNIX likely to still be arround in ten years time as an ongoing product is OS/X. Solaris will have long since joined IRIX, Digital UNIX and VMS as O/S you can still buy and occasionaly see a minor upgrade for it.

      There is a basic set of core functions that O/S do and this has not changed in principle for over a decade. Log based file systems, threads that work etc are now standard, but none of this was new ten years ago.

      The interesting stuff all takes place either above or below the O/S layer. .NET, J2EE etc are where interesting stuff is happening.

      At the driver level I think that both Unix and Windows have the model hopelessly wrong. We have at last got past the point where we have to recompile the kernel for each new driver. But drivers are still mostly executable code while the differences between devices of the same genre are with very few exceptions the type of thing that can be described by code tables.

      I would like to see device manufaturers get out of the device driver writing business, have a genuinely generic driver in the O/S and discover the repetoire of a particular device by reading a configuration file - preferably one that can be read from the device. From a pragmatic point of view XML would probably be a good match for the task since you would inevitably need structured data and a way to extend the basic data structures.

      Unix once had this with the printcap and termcap files. Unfortunately people just seem to be unable to resist turing complete code.

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  6. Who cares? by Fished · · Score: 5, Interesting
    Who cares if Linux is Unix at this point? We are rapidly approaching the point at which UNIX is a Linux-like operating system rather than Linux being a UNIX-like operating system. I'm more or less convinced that proprietary UNIX is dead as a major force in the market. Moving forward, Linux will be setting the agenda and proprietary UNIX will be playing catch up.

    This is particularly evident when you notice that the major improvements in some recent version of Solaris (8 & 9, but not 10 apparently) is to add more open source software and stability improvements.

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  7. Re:Can GNU ever be UNIX? by JeremyR · · Score: 5, Funny

    I suppose that if a certification were awarded, the acronym could be changed to "GNU's Now Unix." :-)

  8. Boy -- talk about your pointless questions... by YankeeInExile · · Score: 5, Interesting

    I think it is almost certain that some distro of Linux could easily pass OG's test suite. It is also almost a certainty that FSF/GNU would never opt for it on religious grounds.

    The rest of the thread is now available for stupid /. jokes.

    In Soviet Russia, The Open Group petitions GNU for certification.

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  9. No. And Yes. by T-Ranger · · Score: 4, Insightful
    "UNIX" means different things to different people. One definition would be something that contains ATT UNIX code. Another would be something that has a bunch of certifications. Linux has neither.

    But, the BSDs, and I believe even Solaris and AIX have a Linux compatability layer, or at the very least, "the GNU toolset", GCC, glibc, etc. Of course you wont beable to run IA32 binaries on a UltraSPARC, regardless of the compatability layer, but you could run IA32/Linux stuff on IA32/*BSD, or SparcLinux stuff on a Solaris box.

    I guess Im trying to say, given that lots of things can run Linux binaries, can cleanly compile Linux targeted sources, Linux + GCC + glibc may be a better standard to target then POSIX and whatnot. It is definitly more modern. Or to put things another way, UNIX is irrelevent, the question shoud be: can UNIXes ever be Linux?

  10. No. Unless Linus or Posix makes a change. by Ungrounded+Lightning · · Score: 4, Informative

    Linux deviates from Posix in several ways, and at least one of them is deliberate - because Linus is convinced that his way is better. Posix can't change because that would break all the existing and past unixes. IMHO Linus is unlikely to change because he believes in the advantages of his way.

    (I don't recall what the particular difference was but as I recall Linus had a very good point. Security? Robustness? Anyhow it should be trivial to look it up - which I'd do if I had the time just now.)

    And I don't see that it really matters, since they can continue as two operating systems and virtually anything will operate well on both, and some things break even crossing between Posix-compatible systems. Linux is doing quite well as is and may end up dominating. The rumors of the demise of the BSDs seem overblown. And who knows what will come next.

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  11. Definition of UNIX: The Open Brand by tepples · · Score: 5, Informative

    UNIX® describes any operating system sold under a brand licensing agreement with the Open Group. This requires the product to pass a checklist that includes certification to the Single UNIX Specification (free reg. req.) on a given set of supported hardware, based in part on product testing, and payment of brand fees pursuant to the Trademark Licensing Agreement (PDF). Often these brand fees are high enough to shut out publishers of low-volume operating system products.

  12. All your Linux Standard Base... by tepples · · Score: 5, Interesting

    GNU/Linux seems to be evolving as its own standard

    And this standard is called LSB.

  13. Linux doesnt need it. by nurb432 · · Score: 4, Insightful

    Its just for 'brand recognition' anyway, and Linux has that now.

    If you say 'Linux' to the general IT population, they already know what you are talking about. ( and they also realize the differences beteeen it and 'unix' ) so why muddy the waters?

    --
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  14. When GNU = Unix? by .+visplek+. · · Score: 5, Funny

    When GNU is Unix, LAME must be an MP3 encoder and WINE must be an emulator.

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  15. It's not important. by IGnatius+T+Foobar · · Score: 4, Insightful
    No Linux distribution has bothered to achieve Unix branding because it's simply not important anymore. People who purchase Unix systems know what Linux is and they know it's the best and fastest growing Unix-like system out there. More importantly, they know that the applications they use have been tested on Linux, probably as a top-tier platform, often as the recommended platform (see Oracle). That being the case, why would a Unix certification from The Open Group make any difference?

    Meanwhile, commercial Unix vendors are going out of their way to achieve Linux compatibility, at either the source or binary level. Linux is quickly becoming the standard to which other Unices are compared. This means two things:
    • The Open Group and its branding are irrelevant
    • Richard Stallman is effectively wrong: GNU is Unix. Except in the real world we don't call it GNU, we call it Linux.
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  16. Re:It's GNU/Linux! by kbahey · · Score: 4, Insightful

    Hurd is definitely a good idea, but so far it is only that: an idea.

    I have been hearing about Hurd at least since 1992 or so, ever since Linus started his project. This is 12 years now, and nothing concrete has come up yet, that can be adopted by the masses.

    Don't get me wrong, I like many of the ideas and design decisions they have. But my gripe is that their model does not allow hordes of programmers to join in and get things out faster, like the Linux model.

  17. UNIX 2003 by taj · · Score: 4, Insightful



    Is the branding alive or not?

    What Unix passes Unix 2003? OK. Who passed UNIX 98? Get the picture? Its going to cost ~$0.5M when all said and done. What advantage is there? Some of the 'UNIX' systems out there have not passed a checklist in over a decade.

    Linux does not need people who dont code deciding what is right and wrong in expensive ongoing beurocratic processes. Things are decided much faster in open forums which document the process in ample detail.

    Linux does deviate but given a coin toss, it goes with the previous 'standards.' If the legacy means does not make sense, its ignored and documented.

    The UNIX branding made sense with legacy closed source Unix systems. It provided a level of trust that customers could drop to without even (imagine!) seeing the underlying code.

    It was a bandaid on a broken model. The outdated Unix systems deviated but the customer could only read documentation, not code.

    So systems like Solaris, AIX, HP-UX ... have two options. Continue down the documentation/standards/branding route increasing customers costs $100's/install or just open up the developement process/source.

    If they decide to open up the process, they have to decide wether to join open source projects or try to replicate the efforts.

    'UNIX' is dead. Do we need a netcraft survey?

    I know people are going to say that wont work. "Look at all the forks in apache and perl and python. It will be anarchy."

    Thats proven to not be the case. The problem has always been closed source.

  18. UNIX matters by mnmn · · Score: 4, Interesting

    well, it mattered to me.

    Back in the days, around 1995, my friends and I were looking for any UNIX to put on our machines to learn. We tried an old copy of SCO Unix which didnt work, and were busy snooping till we found Linux just as it was getting popular online. We got into Linux because we were out looking for UNIX.

    Nowadays I've got AIX and Solaris on ultrasparc to play with, so I can finally brag about knowing 'unix', but would be real nice if Linux is called UNIX. Even though SCO has spilled cold water on the brand name, it still carries enough weight, and maturity of two decades, to get attention. Linux is still new to the scene, and UNIX has carried the full weight of the Internet since its birth... that means something.

    Linux means alot more now, so can UNIX be Linux, or at least its former self? Thats possible, if Linux is branded UNIX, and UNIX can once again claim to be a popular flexible modern OS. Cant do that with SCO Unixware.

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    1. Re:UNIX matters by boaworm · · Score: 4, Interesting

      I know that this is not entirely correct, but this is the way it "feels" like for me, personally.

      UNIX is the actual operating system (which Linux has made a very powerful and capable clone of). It could be OS X, Solaris, AIX, *BSD or whatever. Fine, now I have my UNIX station, what am I going to do with it ?

      Of course, I'm going to run GNU software on it. That's the whole point of running UNIX, the GNU software. Killer apps like the X server(s), Emacs, ftp/web/dns servers and virtually any other software you could ever imagine. I'm running UNIX (or clones) to run the GNU software.

      I'm curious, does anyone else share this view ?

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    2. Re:UNIX matters by AstroDrabb · · Score: 4, Interesting
      UNIX is the actual operating system (which Linux has made a very powerful and capable clone of). It could be OS X, Solaris, AIX, *BSD or whatever.
      The thing is, is that Max OS X and *BSD are not UNIX. If you look at that list, according to the Open Group, the only recent OSes that are _true_ Unix and allowed to be called UNIX are Sun Solaris, IBM AIX and Compaq Tru64. So if you need a true Unix, these are your only choices. However, for me and probably many others, if you need close-to-Unix, then Linux, *BSD and even Mac OS X are very, very close and will do the job very well if not better then the current _true_ UNIX system out there. I don't think that the Unix name will be that important in a few years. Linux, Mac OS X and *BSD have a name already in the IT market. What would getting Linux, Mac OS X or *BSD Unix certified do for them?

      I do agree with you though about the GNU software. That is what makes a good Linux/*BSD system.

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  19. What's in a name? by cpghost · · Score: 4, Insightful

    My first reaction was: "Why the heck should Linux be Unix-certified? With increasing popularity, Unix will soon have to be Linux-certified if it wants to get any kind of market acceptance."

    Well, as amusing as it may be, this thought is flawed. First of all Linux is merely the kernel; it's not even glibc, nor any other GNU tools, or third party packages. BSDs are Unix-like OS, just like Linux(-distros) are Unix-like. Solaris is also _a_ Unix-like OS, just like HP-UX.

    Actually Unix has become a generic term which refers to all kind of kernels that expose a POSIX (don't remember the exact number) interface to userland applications. Any kernel (or microkernel + servers) that implements this interface, can be justly called Unix (or at least Unix-like; so as to not feed SCOundrel or Open Group lawyers).

    The really interesting thing about the hype around Linux, is when we will move on and replace the Linux kernel with something totally different (be it microkernelized, or whatever). Then, we won't have just a GNU/Linux system anymore, but, say, also a GNU/Hurd/L4, GNU/Hurd/Mach or GNU/BSD, BSD/Linux, BSD/Hurd/*, ... system (terminology being "OS personality"/"OS servers"/"microkernel" or "OS personality"/"monolithic kernel").

    It seems silly to use the kernel name only as a brand for all kind of Unix-oid systems, regardless of them using the Linux kernel or something else; but providing the POSIX Unix interface.

    To wrap it up: it's just a matter of names and brands. As other posters have commented before, Linux has gained enough popularity and visibility. It doesn't need to be certified to be successful!

    --
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