Hello,
Actually, there IS a "commercially viable mainframe implementation" of Unix. UTS Global was spun-off from Amdahl Corp. a few years ago, and we continue to provide (and support) an SVR4 implementation that was ported - and optimized - to run on XA/ESA/S390/zSeries processors. Our customer base includes all the major US telephone companies. Anyone interested? :-) Dick Holic UTS Global Customer Care www.utsglobal.com -----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of Alan Altmark Sent: Friday, February 04, 2005 06:08 To: [email protected] Subject: Re: [LINUX-390] comparison beetwen Linux and UNIX On Friday, 02/04/2005 at 11:27 ZE7, Andri W Sundara <[EMAIL PROTECTED]> wrote: > Does anybody have comparison between Linux and Unix ? Mr. Thornton's cough syrup-induced remarks aside, "Unix" is a brand name conferred upon a variety of POSIX-oriented operating systems, indicative of a common ancestor in their implementations. "Linux" refers to a specific implementation of a POSIX-oriented operating system that does not to contain any DNA from the common ancestor. On the surface, many would claim that there is no difference (Adam's point), but that's more a side effect of the POSIX nature of the operating systems. [The limb is weak; I can go no further.] So, you really can't compare "Unix" and "Linux". They are terms of art. Well, I guess you can compare, but it's just a philosophical/legal/religious/spelling discussion. In terms of specific features or characteristics, you can only compare specific implementations. E.g. "AIX vs. Linux on PowerPC" or "Sun Solaris vs. Linux on x86". Comparing across architectures ("Solaris on x86 vs. Linux on zSeries") is problematic at best. That's not a comparison of Solaris vs. Linux, but one of x86 vs. zSeries. Enter, stage left, discussions about Total Cost of Ownership, CPU speeds, I/O capacity, partitioning, and virtualization features. But in this mainframe-specific forum, there is no [commercially viable] mainframe implementation of anything you would recognize as "Unix", so the implementation comparison is impossible. To splitters of hairs: Yes, z/OS has a Unix-branded API and shell available, but I you can't call z/OS "Unix". Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
