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Article #4302Re: Difference between Unix and Linux?
From: Steve Mading
Date: Sat, 06 Jul 2002 01:18
Date: Sat, 06 Jul 2002 01:18
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3152 bytes
In comp.unix.questions Robert Uhl <ruhl@4dv.net> <ruhl@4dv.net> wrote: : Steve Mading <madings@baladi.bmrb.wisc.edu> writes: :> :> :> Alright, then switching from programs to other files, would that :> :> one userland process function very well without any of the :> :> libraries in /lib, without the ability to interface with with :> :> system routines because the library to interface with the kernel :> :> is not there? :> :> : It could interface to the kernel directly... :> :> How? Remember, no compiler, no libraries, no linking because you :> are talking about bare-bones here (and precompiling elsewhere :> doesn't count because that just offloads some OS functionality to a :> seperate machine.) So it would have to be by memorizing the offsets :> of where routines start and calling them by address. : It'd do it the same way glibc does it. There's nothing special about : glibc; I could write ulibc, were I sufficiently motivated. Ditto for : you or anyone else... :> You also didn't answer the problem that "init=..." won't work :> unless the executable you run is stored in a filesystem somewhere, :> which means that the filesystem has to be part of the OS. : Which is fairly appropriate, as allocating resources is the OS's job, : and disk space is nothing if not a resource. I agree that it is appropriate. Jeffery, on the other hand, says that ONLY the kernel is the OS and nothing else. I'm trying to show how a kernel with nothing else is completely useless as a platform onto which to put a program.
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From: Steve Mading <madings@baladi.bmrb.wisc.edu>
Newsgroups: comp.unix.admin,comp.unix.questions,gnu.misc.discuss
Subject: Re: Difference between Unix and Linux?
Date: Sat, 6 Jul 2002 01:18:51 +0000 (UTC)
Organization: University of Wisconsin, Madison
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