[Info-vax] Anyone interested in another public access system
Bill Gunshannon
billg999 at cs.uofs.edu
Sat Apr 11 14:40:38 EDT 2009
In article <9Iqdnf8RcM-4JH3UnZ2dnUVZ_iydnZ2d at giganews.com>,
"Richard B. Gilbert" <rgilbert88 at comcast.net> writes:
> sapienzaf wrote:
>> On Apr 11, 9:32 am, billg... at cs.uofs.edu (Bill Gunshannon) wrote:
>>> Actually,
>>> there is a standard for what an OS should provide. It's called POSIX.
>>> Which OS come closer?
>>>
>>
>> The POSIX standard is a set of features that Unix-like operating
>> systems should provide, and not a standard for the design of any
>> operating system in general.
>>
>> POSIX = "Portable Operating System Interface for Unix". Note the "for
>> Unix" part of the acronym. That hardly establishes it as "a standard
>> for what an OS should provide", in the general sense of your
>> statement.
>>
>> Though I haven't confirmed it, according to some sources many of the
>> open-source Unix-like operating systems aren't fully POSIX compliant.
>> GNU/Linux, FreeBSD, OpenBSD, and NetBSD are on the not-fully-compliant
>> list.
>>
>> You should do the research yourself to answer the question "which OS
>> comes closer". You'll have to provide a comparison of the compliant
>> and non-compliant features of OpenVMS (with the POSIX libaries
>> installed) versus any particular distribution of Linux or whichever
>> Unix variant you have in mind. I'm sure it will be informative for
>> all of us to see the results of your research.
>
> Even POSIX, at least on VMS, does not automagically make it possible to
> build and run Unix software. I once tried to build NTP from source on
> VMS+POSIX. It couldn't even run the configure script!
That is probably because at its best VMS was never more than minimaly
POSIX compliant.
bill
--
Bill Gunshannon | de-moc-ra-cy (di mok' ra see) n. Three wolves
billg999 at cs.scranton.edu | and a sheep voting on what's for dinner.
University of Scranton |
Scranton, Pennsylvania | #include <std.disclaimer.h>
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