Re: HP FUDBusting
From: James T. Dennis (jadestar_at_idiom.com)
Date: 08/02/03
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Date: Sat, 02 Aug 2003 00:37:10 -0000
In comp.unix.admin Bill Gunshannon <bill@gw5.cs.uofs.edu> wrote:
> In article <20030722205651.4071.qmail@gacracker.org>,
> Doc.Cypher <Use-Author-Address-Header@[127.1]> writes:
>> On Tue, 22 Jul 2003, "Brian Tillman" <Tillman@sparkingwire.com> wrote:
>>>>I guess people who're primarly programmers prefer Unix, whereas
>>>administrators prefer VMS
>>>Perhaps among the programmers you know, but that's a self-selected list and
>>>very atypical.
>> Quite.
>> When you've horribly mangled something and have a versioning filesystem you'll
>> be thankful.
> 1. Any programmer worth his salt saves intermediate versions of his work
> in case a roll back is required. Even if the system has versions.
> 2. Any of the source management tools some of which have been available
> on Unix since the early days (RCS, SCCS, CVS) make rollbacks possible if
> you decide you went the wrong way.
> But, just like with VMS, it is the programmers responsibility to make
> use of the tools available to him. (you can set the versions to 1 in
> your login.com and I have seen students do this in order to save space
> because their quotas were low.)
> It always comes back to the same thing, On ei snot necessarily better than
> the other, just different. Better or worse is in the eye of the beholder.
> bill
This is another example of the classic "mechanism" vs. policy debate.
UNIX provides mechanisms (mostly in userspace) to provide file versioning,
version control, and transactional/rollback capabilities. UNIX favors a
client/server approach to most of these issues --- CVS and any common
RDBMS are examples. Let the DBMS or the version control system manage
their own transactional needs according to their unique requirements.
Of course any version of UNIX *can* also offer filesystem versioning and
some experimental patches add this to Linux.
-- Jim Dennis, Starshine: Signed, Sealed, Delivered
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