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====== The start of Your original message ======

UNIX-WIZARDS Digest          Fri, 16 Nov 1990              V11#033

Today's Topics:
                  Re: $ENV: ?? What does that mean?!!
                       Re: Killer Micro Question
                Re: Killer Micro Question vs. mainframes
                       Re: Killer Micro Question
                      Where the Hell is everyone?
                  Re: how to setuid for shell scripts?
             Status of voting to rename comp.unix.internals
                  Re: question on select() and sockets
                    UniForum Research Award Program
                               Re: YA4.1B
          Re: asserts and unexpected returns (was: Re: Assert)
                     Re: What is the kernel doing?
     How to Interprete the Counters Kept at "/usr/include/sys/dk.h"

-----------------------------------------------------------------

From: Mark Hull-Richter <mahrk at ccicpg.uucp>
Subject: Re: $ENV: ?? What does that mean?!!
Date: 14 Nov 90 18:14:38 GMT
To:       unix-wizards at sem.brl.mil

In article <24894 at adm.BRL.MIL>, ARCARDW%INDSVAX1.BITNET at uicvm.uic.edu (DUDE OF
 TIME) writes:
>
>  Yes, its me again.   What does $ENV: mean in Korne Shell???
>
> Is it a path to environment file??? or what????
>
> HELP!
>
> Paul.

Well, if you would RTFM I think you would find the answer fairly easily.
I quote:

	ENV  If this variable is set, then parameter substitution is
	     performed on the value to generate the pathname of the
	     script that will be executed when the shell is invoked (see
	     Invocation, below [in the man page, not here]).  This file
	     is typically used for alias and function definitions.

This is why it is usually a good idea to RTFM before making a world-wide
public humiliating spectacle of oneself.

Vicious?  Acerbic?  Sarcastic?  Not me - I just call 'em as I see 'em.

Oh, and by the way, it's Korn shell (after its author, Dave Korn).

--
Mark A. Hull-Richter, Software Engineering Specialist I  (714)458-7282x539
ICL, 9801 Muirlands Boulevard, Irvine, CA  92713
                             To err is human; to forgive is not my policy.
UUCP: ccicpg!mahrk (alt: ccicpg!{lanski|al}!mhr)        flames > /dev/null

-----------------------------

From: Ian Dall <ian at sibyl.eleceng.ua.oz>
Subject: Re: Killer Micro Question
Date: 15 Nov 90 01:25:14 GMT
To:       unix-wizards at sem.brl.mil

In article <16364 at s.ms.uky.edu> randy at ms.uky.edu (Randy Appleton) writes:
>But how does each user, who is about to log in, know which machine to
>log into?  He ought to log into the one with the lowest load average, yet
>without logging on cannot determine which one that is.

I do just that! I have a little shell script called "least-loaded"
which grunges through the output of ruptime. So when X starts up it
does "rsh `least-loaded <list of servers>` ...." to start my clients.
I also do this when I have a compute bound job to run.

The only catch is that all servers need to be capable of running your
job. We have several servers set up with NFS cross mounting so they
are *almost* identical. You can get caught out sometimes though.
Also, NFS imposes an additional overhead. Running a compute bound
process this way is fine, running an IO bound process this way might
be a bad idea if the disk it accesses is physically on another server.

In short, I think it is a good idea, but it needs a more efficient
distributed file system before I would want to release it on Joe User.
It would be really nice to have a distributed OS which was able to
migrate IO bound processes to minimise network traffic and migrate
cpu bound processes to the least loaded machine. Dream on!

--
Ian Dall     life (n). A sexually transmitted disease which afflicts
                       some people more severely than others.

-----------------------------

From: Bob Devine <devine at shodha.enet.dec.com>
Subject: Re: Killer Micro Question vs. mainframes
Date: 15 Nov 90 19:14:50 GMT
Followup-To: poster
To:       unix-wizards at sem.brl.mil

John R. Levine writes: