HDTenEightyP/NetNews huggingface dataset:
From: terry@phoenix.ocf.llnl.gov (Terry Heidelberg x24154)
Newsgroups: comp.unix.aix
Subject: Re: FDDI Trouble...
Keywords: FDDI fiber
Date: 6 Oct 92 21:40:54 GMT
Organization: LLNL

In article <1992Oct5.221427.2293@fcom.cc.utah.edu>, 
ben@osiris.usi.utah.edu (Ben Pratt) writes:
|> Anyone out there running fddi between their rs6k's who can lend some
|> thoughts or suggestions on this.

|> I can make two rs/6000s with single ring fddi adapters talk using
|> fiber barrel connectors.  I have MIC-to-ST cables and barrel connectors.
|> I have 8 machines to inteconnect in a fddi ring.
|> [stuff deleted]
|> 
|> I can make any two rs/6000s speak and hear each other so I know the basic
|> cabling, cards and software are OK.
|> 
|> When I add a third machine it no longer communicates, i.e. ping to any
|> ring neighbor doesn't work.
|>  [stuff deleted]
|> 
|> This configuration doesn't work.  I'm mystified.  Yes I know everyone else
|> is using concentrators, but is that a requirement?  I DO have good reasons
|> for this implementation, money (98 versus 13000) and the machines aren't
|> subject to user or office worker whims.  They are in a locked machine room
|> and serve only as compute servers.  In smit you can make some configuration
|> changes on the device but they don't make it any different (i.e. they
|> don't make it work).
|> 
|> Should this physical single ring work?  The fddi spec. seems to indicate
|> that it's not a problem.  All hardware and cables and software do work in
|> a 2 node environment.
|> 

We have 18 550's connected as a cluster of servers, and we see a similar 
problem when we try to test a newly-installed FDDI net.   I can't speak to
the exact hardware hookup, but the essential software scenario is:
         on A, a "ping B" hangs;
         on B, a "ping A" works immediately, and
         on A, as soon as the ping from B arrives, the hung "ping B" starts
             working!

We have also noticed that the arp table entries for the FDDI hostname shows
up only very briefly, and then disappears from the table.

We've called it in as a bug report.

(We have replaced 3 of 18 FDDI cards so far in less than a month of use.)

Terry
From: kraemerf@franvm3.VNET.IBM.COM (Frank Kraemer)
Date: Tue, 29 Sep 92 12:46:45 CET
Newsgroups: comp.unix.aix
Subject: 220 - remote /usr shutdown hangs
Reply-To: kraemerf@franvm3.VNET.IBM.COM
Organization: IBM Germany, BO-89 ACIS South
Disclaimer: This posting represents the poster's views, not those of IBM
News-Software: Usenet 3.0

In reply to various appends - the reason for the hang is that /etc/tcp.clean
is called from the shutdown command and executes a '/etc/ifconfig <adapter>
down' by accident. Well, that's it for a diskless/dataless station, no way
to come up again without a network connection.

To fix this just edit /etc/tcp.clean and move the 'fi' from line 136 after
the 'fi' in line 147.
frank

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'----------------------------------------------------------------------'
Newsgroups: comp.unix.aix
From: rick@ransom.msc.cornell.edu (Rick Cochran)
Subject: Re: How can I get mksysb use 2 tapes? Do I need diff block size?
Organization: Cornell Materials Science Center
Date: Mon, 28 Sep 1992 14:59:57 GMT

In article <1992Sep24.194501.13559@ncar.ucar.edu>, fredrick@acd.acd.ucar.edu (Timothy Fredrick) writes:
|> I have having problems with the mksysb shellscript and after several attempts
|> have not been able to do an image backup.  We had a disk failure recently,
|> and I would definitely like to get this capability to work.
|> 
|> Our problem is that rootvg is larger that 2GB and requires 2 8mm tapes to
|> back up.  But msksysb fails with a message that looks something like "mksysb
|> halted" and then "EOF countered on /dev/rmt0".  Can someone help me out
|> and tell me if I'm using the right commands?  I would like to get the
|> script to prompt me for a second tape rather than just crash.  Here is
|> what we're doing:
|> 
|>       umount /dev/cd0
|>       /etc/nfs.clean
|>       /etc/tcp.clean
|>       /usr/bin/mkszfile
|>       mksysb '/dev/rmt0.1'
|> 
|> Should I be setting the block size on the tape device to something other
|> than 0.  We have it set to 0 so we can read/write tapes produced on Sun
|> SPARCstations.
|> 
|> Any help would be appreciated.  Thanks in advance.

mksysb uses tar.  tar doesn't support multiple tapes.  Have a nice day.

Move everything but /, /usr, /var, and /tmp from rootvg to another volume
group.

Use 'backup' to backup the moved filesystems.

Alternatively, you can diddle 'mksysb' so that it doesn't backup anything
other than /, /usr, /var, and /tmp.  But the above method is better.

Related question: What are sites with 150MB tape drives (not me!)
going to do now that a mksysb of the basic filesystems is too big to
fit?

-- 
|Rick Cochran		  607-255-7223		     rick@msc.cornell.edu|
|Cornell Materials Science Center		     rick@crnlmsc2.bitnet|
|E20 Clark Hall, Ithaca, N.Y. 14853	     cornell!msc.cornell.edu!rick|
From: konopik@konopik.austin.ibm.com (Brad Konopik)
Newsgroups: comp.unix.aix
Subject: Re: Q: Adding a second pseudo-tty (PTY) devices in AIX 3.2
Date: 3 Oct 92 03:05:03 GMT
Organization: IBM AIX Porting Center, Austin

In article <5720@news.duke.edu> jpe@ee.egr.duke.edu (John P. Eisenmenger) writes:
>Is it possible to add a second (or subsequent) PTY devices under AIX 3.2?
>As I have mentioned in earlier postings, my central machine is a Model 350,
>and I've noticed recently that usage of my ptys has reached peaks in the
>60s.  PTY0 only allows 64 links, so I need to add a second PTY.  If anyone
>knows how to do this (SMIT, INFO, etc. haven't proven to be very informative
>on this), I would greatly appreciate some help.

Are you running applications which actually use the BSD-style symbolic 
links instead of the multiplexed special files ??  Most of the applications 
shipped with AIX that use ptys use the multiplexed special files (/dev/ptc
and /dev/pts), not the BSD-style symbolic links (/dev/ttyp? and /dev/ptyp?)

If your applications use the multiplexed special files, then you aren't
limited by the number of symbolic links...getting "channels" assigned by
opening /dev/ptc is only limited by your real memory.  If you do find you
actually run out of symbolic links, contact me off-line and I'll send you
info on a couple ways to jack up the number.

-- 
  tcpnet: konopik@konopik.austin.ibm.com  |  Brad Konopik
 ibmvnet: KONOPIK at AUSTIN               |  IBM AIX Porting Center, Austin
internet: konopik.austin.ibm.com!konopik@ibmpa.awdpa.ibm.com
   uunet: ..!uunet!ibmsupt!ibmpa!konopik.austin.ibm.com!konopik
Newsgroups: comp.unix.aix
From: prener@watson.ibm.com (Dan Prener)
Subject: Re: AIX and 3270
Date: Wed, 7 Oct 1992 04:46:36 GMT
Disclaimer: This posting represents the poster's views, not necessarily those of IBM
Organization: IBM T.J. Watson Research Center, Hawthorne, New York

In article <92279.123136HARVEY@wuvmd.wustl.edu> Bill Harvey <HARVEY@WUVMD.Wustl.Edu> writes:

 [ ... ]

>No, but that brings up another question:  Where does that tn3270 that I
>can run under AIX come from?  Is that part of the AIX base OS?  A
>separate feature?  Is it provided by IBM at all?

 [ ... ]

According to the InfoExplorer entry, tn3270 is part of the TCP/IP Facility.
--
                                   Dan Prener (prener@watson.ibm.com)
From: kevin@shady.UUCP (Kevin Smith)
Newsgroups: comp.unix.aix
Subject: Re: aixwm vs mwm/twm, aixterm vs xterm
Keywords: aixwm, aixterm, comparisons
Date: 5 Oct 92 14:33:28 GMT
Reply-To: kevin@shady.UUCP (Kevin Smith)
Organization: ShadeTree Software, Inc.

:In article <713758784@macbeth.cs.duke.edu> hsg@duke.cs.duke.edu (Henry Greenside) writes:
:>
...
:>
:>Also, a simple question: how does one scroll a single
:>or a few lines in a AIX scroll bar? For a large file,
:>the scroll bar moves text too quickly and most clicks I
:>have tried jump a page, rather than a few lines, at a
:>time, which is sometimes awkward for reading. Also
:>trying is the fact that the scroll bar does not track
:>the mouse very accurately, so that the scroll bar has
:>to catch up to the mouse, leading to an overshooting of
:>the window.

In xterm (and I'll go out on a limb and assume aixterm) when you click
button one in the scroll bar it moves the line adjacent to the pointer
to the top of the screen.  Therefore, by positioning the pointer in the
middle of scrollbar (vertically) the screen will jump by half pages.
The same applies for button three and reverse scrolling.
-- 
	    | Email - !shady!kevin uunet!shady!kevin
Kevin Smith | Voice - (908) 874-7980
	    | Mail  - ShadeTree Software, Inc., 192 Capricorn Dr. #10,
	    |         Somerville, NJ  08876
Newsgroups: comp.unix.aix
From: doug@cc.ysu.edu (Doug Sewell)
Subject: Re: Stripping binaries - segmentation violation
Organization: Bush in 92 ? NOT!
X-Newsreader: Tin 1.1 PL4
Date: Sun, 27 Sep 1992 23:35:59 GMT

t2101fs@sun1.LRZ-Muenchen.DE () writes:
: I translated EMACS under AIX 3.1.5 some time ago. To make the starting
: of EMACS via NFS faster, I stripped the binaries (Same O.S. version).
: 
: The result was that EMACS dumps a core (segmentation violation). Why?
: 
You can't strip EMACS.  This is a DOCUMENTED limitation on many - if not
all - platforms.
--
Doug Sewell, Tech Support, Computer Center, Youngstown State University
doug@cc.ysu.edu	   doug@ysub.bitnet	<internet>!cc.ysu.edu!doug
"Recession: your friend loses his job.  Depression: you lose your job.
Recovery: Bush loses his job" - Bill Davidsen
Newsgroups: comp.unix.aix
From: mcguire@selway.umt.edu (Charles J McGuire)
Subject: Re: New IBM move to 4mm DAT SCSI tape
Organization: University of Montana
Date: Wed, 30 Sep 1992 19:18:01 GMT

In article <1992Sep26.012022.15032@icus.ICUS.COM> lenny@icus.ICUS.COM (Lenny Tropiano) writes:
>In article <Bv536s.25F@portal.hq.videocart.com> 
>kdenning@portal.hq.videocart.com (Karl Denninger) writes:
>>In article <1992Sep24.215859.8002@wsm.com> jeff@wsm.com (Jeff Johnson) writes:
>>>Hello,
>>>
>>>	IBM just announced (9/23/92) that they were going to move from using
>>>the 8mm (Exabyte) SCSI tape drive for the RS/6000 backup device to the
>>>4mm DDS/DAT SCSI tape drive made by Hewlett-Packard. Shows that IBM is
>>>smart enough to realize how unreliable 8mm technology is. (I know I'll get
>>>replies over that comment... `gulp')
>>
I'm not sure exactly what "reliable" means here. My past experience with brand
new HP 700's and 4mm DAT included repeated tape jams and several replacements
of the drive within the first 3 weeks. So far, I haven't had any problems with
the 8mm drives on 6000's.

Charlie McGuire
Computer Science
The University of Montana
mcguire@huckle.cs.umt.edu
From: curt@ekhadafi.austin.ibm.com (Curt Finch 903 2F021 curt@aixwiz.austin.ibm.com 512-838-2806)
Newsgroups: comp.unix.aix
Subject: Re: Anonymous ftp in AIX 3.2.1
Date: 1 Oct 92 16:47:54 GMT
Organization: IBM AWD, Austin

In article <91135@netnews.upenn.edu> ahsu@akira.anatomy.upenn.edu (Andrew Hsu) writes:
>I'm running an RS/6000 320 under AIX 3.2.1.  I remember a while ago
>that there was a CERT advisory about anonymous ftp sessions being
>unsecure under AIX.  Has this problem been fixed under 3.2.1?  If not,
>does anyone know what to change in the /usr/lpp/tcpip/samples/anon.ftp
>script so that I can create a secure anonymous ftp session?

i sent your question to julie level and she said:


	Hi Curt, 

	Don't have time to answer this now (400+ in
	comp.unix.aix), but you can tell this guy
	it is fixed in 3.2.  He should have 1.12
	of anon.ftp (ix23944).

	Later,
	Julie

-- 
--
curt@aixwiz.austin.ibm.com (Curt L. Finch) | AIX NFS/NIS Field Quality 
My views are unrelated to those of IBM     |        Austin, TX
 -Public school administration has gone from 15% to 30% of expenses since 1960-
From: jlarouch@sobeco.com (Jacques Larouche)
Newsgroups: comp.unix.aix
Subject: Re: PC-NFS from FTP, Inc.
Keywords: PC-NFS, Interdrive
Date: 3 Oct 92 17:51:30 GMT
Organization: Sobeco Ernst & Young

In <1992Oct1.155404.4604@news.unige.ch> favre@medsun.unige.ch (favre) writes:

>Hello network!

>The PC is running the Interdrive software from FTP, Inc. 
>(version 2.1).
>I've added the name of my PC in the /etc/hosts file and
>configured the NFS on AIX to accept connections from it.
> 
>Do you have any experience concerning the Interdrive from
>FTP, Inc., or, more generally, from other PC-NFS softwares ?

My experience using Interdrive (NFS drive from a PC if that's what you
mean) was good with PCTCP v2.05 but not with the latest version - 2.1

When mounting an NFS drive, it crashed the server (in fact we tried that
twice and it occured twice...) The servers were not RS6000, but Mips
3240/3350. After this experience, we didn't go further and are waiting for
an answer from FTP software support.

--
Jacques Larouche                        Internet: jlarouch@sobeco.com
Unix/Hardware support                   Uunet   : uunet!sobeco!jlarouch
Sobeco  Ernst & Young                   Voice   : (514) 878-9090
Montreal, QC, Canada                    
Newsgroups: comp.unix.aix
From: lpc@dickens.com (Luis P Caamano)
Subject: Re: SLIP between 3.1.5 and 3.2 machine
Date: Fri, 25 Sep 1992 14:34:38 GMT
Organization: Dickens Data Systems, Inc.
Keywords: slip aix

In article <stritzi.717337061@Physik.TU-Muenchen.DE> stritzi@Physik.TU-Muenchen.DE (Peer Stritzinger) writes:
>I tried to do set up a slip connection between an AIX 3.1.5 and an AIX 3.2
>machine. Everything works fine, the modems connect, baud rates are ok,
>but the machines don't talk to each other.
>
>Any ideas?
>

From our experience, SLIP doesn't work on 3.1.5 (actually, it barely 
works but in practice it's useless).

Upgrade to 3.1.6

BTW, baud rates might not be OK !!

regards,

-- 
---------------------------------------------------------------------------
Luis P. Caamano                    |         lpc@dickens.com
Dickens Data Systems, Inc.         |         uunet!dickens.com!lpc
Atlanta, GA                        |         (404) 475-8860
---------------------------------------------------------------------------
If I think I know it all, I'll stop learning. -myself
The more I learn, the more I know I know nothing. -somebody else
From: ingram@cs.duke.edu (Robert E. Ingram,02N,6606573,9294051)
Newsgroups: comp.unix.aix
Subject: System Resource Controller (SRC) probelm
Keywords: SRC, subsystem, mkssys, startsrc
Date: 29 Sep 92 19:41:12 GMT
Reply-To: ingram@cs.duke.edu
Followup-To: comp.unix.aix
Organization: Duke University Computer Science

I have been trying to use startsrc to run a locally-modified version
of rwhod on an RS6000 under AIX 3.2. The source code, which was previously
used on DEC (VAX & PDP-11), i386 & Sun platforms, compiled with
minimal prodding. The problem is that the SRC refuses to recognize
the executing rwhod process as an active subsystem. Here are the 
commands that I give to (supposedly) start the subsystem:

lem# mkssys -s in.rwhod -p /usr/local/etc/in.rwhod -u 0 -G tcpip
0513-071 The in.rwhod Subsystem has been added.
lem# lssrc -s in.rwhod
Subsystem         Group            PID     Status 
 in.rwhod         tcpip                    inoperative
lem# startsrc -s in.rwhod -a "-b -t"
0513-059 The in.rwhod Subsystem has been started. Subsystem PID is 16826.
lem# lssrc -p 16826
Subsystem         Group            PID     Status 
lem# lssrc -l -s in.rwhod
0513-036 The request could not be passed to the in.rwhod subsystem.
Start the subsystem and try your command again.
lem# lssrc -s in.rwhod
Subsystem         Group            PID     Status 
 in.rwhod         tcpip                    inoperative
lem# ps g | grep in.rwhod
12731      - S     0:00 /usr/local/etc/in.rwhod -b -t
lem# 

Replies via e-mail and posting to comp.unix.aix both accepted. I hope that the
only answer does not turn out to be "It is illegal to add your own subsystems
under AIX." I have poured over the info pages related to the SRC, and everything
it says to do, I have done; yet no subsystem! If there is enough interest
in the SRC & useful answers come in, I will summarize.

--
Department of Computer Science, Duke University, Durham, NC 27706
Internet:	ingram@cs.duke.edu    (Robert Ingram)
UUCP:		mcnc!duke!ingram
Newsgroups: comp.unix.aix
From: croyer@atg.amex-trs.com (Chuck Royer)
Subject: SLIP connection between RS/6000 and XStation 130
Date: Fri, 2 Oct 1992 15:26:26 GMT
Reply-To: croyer@atg.amex-trs.com
Organization: American Express Advanced Technology Group
Keywords: SLIP XStation
Followup-To: comp.unix.aix

Configuration:
	RS/6000 560 running AIX 3.2
	IBM XStation 130
	US Robotics Courier Hi-Speed modems (I also have T2500s if needed).

I want to set up an XStation 130 via a SLIP connection over modem lines.  I
have been through Info and the Technical Library CD and have found only
partial details.  I can create the "sl0" interface on the RS/6000 and I can
set up the XStation 130 for SLIP.  I still need to know some other details:

1.  Do I need to create a separate network for "sl0".  I currently have
	both Ethernet and Token-Ring interfaces on the RS/6000 with a
	netmask of 255.255.255.128.  Hosts numbered 0-127 are on Ethernet
	and hosts numbered 128-255 are on Token-Ring.

2.  Does the RS/6000 dial the XStation or vice versa?  I have been unable
	to make the "slattach" command do any dialing and the dial string
	entry on the XStation 130 SLIP setup seems to have no purpose
	either.

3.  Is a 9600 baud SLIP connection going to be fast enough to give decent
	X performance on the XStation?

Any help or experiences would be greatly appreciated.  Please respond via
e-mail and I will post a summary.

Thanks in advance.

-- 


- Chuck Royer
Newsgroups: comp.unix.aix
From: richard@serss0 (Richard A Simm)
Subject: timeout for ftp command
Organization: Florida International University, Miami
Date: Tue, 6 Oct 1992 17:33:12 GMT

I need some way to specify a timeout value to the ftp command. The AIX
man pages don't mention any such thing. Here's what I'm trying to do:

At work, we have a Novell network which takes care of most printing.
If a file is to be printed from the RS/6000, it is ftp'ed to Novell
and Novell's NPRINT command is used to direct output to the appropriate
printer. We not have everything set up to run under windows with two
dos sessions open (one session is the Clarkson package, the other session
runs a DOS batch file).

When a file is printed, 'lp' places the file in a directory that contains
all the print files pending to be ftp'ed to Novell to be printed. It is
the responsibility of the ftp session to look in this directory, and
if any files exist, ftp the file to the local hard drive of the computer
running these two DOS sessions under Windows.

The second DOS session (the batch file) looks through directories on the
hard drive (there are subdirectories for printer names that ftp uploads
the files to) to see if anything needs printing. If it finds a file in
a directory (say hplaser for example), it will print all files in that
directory to the 'hplaser' queue from Novell.

The problem is we have offices around the world and all printing is
controlled from this PC. So, if several files are queued on the RS/6000
to print for say Hong Kong, as both DOS sessions are running they both
try to do their thing. But, NPRINT to Hong Kong is *slow*. So, while
NPRINT is printing to Hong Kong and Clarkson is ftp'ing from RS/6000,
it gets hung.

We'll be getting T1 lines for communicating with our world-wide offices
soon but any method to solve the above problem would be appreciated.
Writing a script to run in root's cron to kill ftp if it's idle for
~2 minutes is not my idea of "clean" :)

We have an RS/6000 model 320 running AIX 3.1.

Richard
Newsgroups: comp.unix.aix
Organization: Ege University - Computing Center
Date: Tuesday, 29 Sep 1992 14:08:58 TUR
From: Mustafa Inceoglu <BILMIN@TREARN.BITNET>
Newsgroups: comp.unix.aix
Subject:    Please help me ...

Hello ...

We have two RS/6000 machines but we have not any documents for AIX .
Can somebody send me AIX command list or AIX quick reference etc.

Thanks for your interest ...

Mustafa INCEOGLU
BILMIN at TREARN.BITNET
Newsgroups: comp.unix.aix
From: mqh@theory.TC.Cornell.EDU (Mike Hojnowski)
Subject: Re: How can I get mksysb use 2 tapes?
Organization: Cornell Theory Center
Date: Mon, 28 Sep 1992 18:48:05 GMT

In article <9209281638.AA00238@ucbvax.Berkeley.EDU> VRBASS@ATLVMIC1.VNET.IBM.COM writes:
>rick@ransom.msc.cornell.edu (Rick Cochran) writes:
>> tar doesn't support multiple tapes.
>
>This is certainly a bit of news to me!  (I don't have a 3.2 system in
>front of me at this very moment, but...) "tar" under AIX has supported
>multiple media for several years now (i.e., since the version that ran
>on the RT).   I use it on a regular basis and get "proceeding to next
>tape" messages all the time.  If it doesn't work on 3.2GB tapes, that's
>an odd anomaly.

Rick, I agree with Vance.  I routinely back up a 1G disk (about 1/3 full)  onto
150 MB tapes.  It takes about 3, and works without a hitch.

Mike Hojnowski
Cornell University
Newsgroups: comp.unix.aix
From: takara@m.cs.uiuc.edu (Kenn Takara)
Subject: Looking for an RS/6000 instruction-level simulator
Keywords: RS/6000,instruction-level simulator
Organization: University of Illinois, Dept. of Comp. Sci., Urbana, IL
Date: Wed, 30 Sep 1992 17:51:26 GMT

I am looking for an instruction-level simulator for the RS/6000.
I will be using it to look at compiler techniques for superscalar
machines for a class that I'm taking.

Reply by email to takara@cs.uiuc.edu

Thanks

Kenn Takara
Graduate Student
University of Illinois at Urbana-Champaign
Newsgroups: comp.unix.aix
From: peterk@syma.sussex.ac.uk (Peter J Knowles)
Subject: aix shared libraries and fortran common blocks
Organization: University of Sussex at Brighton
X-Newsreader: Tin 1.1 PL4
Date: Mon, 5 Oct 1992 11:26:51 GMT

I wish to create a shared library under AIX 3.2. The routines in the library
contain common blocks which also appear in those routines which are not in the
library, but call routines in the library. How can I persuade ld to export
the common blocks as well as the routine names? It doesn't seem to work
just adding the common block names to the exports file.
Thanks!
Peter Knowles.
Newsgroups: comp.unix.aix
From: wcs@NeoSoft.com (Bill Simpson)
Subject: Re: CPU Serial numbers
Organization: NeoSoft Communications Services -- (713) 684-5900
Distribution: usa 
Date: Mon, 05 Oct 1992 02:58:27 GMT
Summary: uname -m gives s/n in rom 
Keywords: aix serial/number uname 

In article <1992Oct2.202306.19857@awdprime.austin.ibm.com> accapadi@mathew.austin.ibm.com (Matt Accapadi) writes:
>In article <cis.717985368@kraken> cis@kraken.itc.gu.edu.au (Tony O'Hagan) writes:
>>Does anyone know how to get the CPU or hard disk serial number
>>using an ioctl() call ?
>>Someone with a CD-ROM Manual might be able to assist.  The buzz word is
>>"VPD" or "Vital Product Data".
>
>Well, I looked at the devinfo structure and it doesn't have any thing
>reserved for a serial number - so the IOCINFO ioctl would be out.
>Does it have to be an ioctl?  The "lscfg" command would do the trick.
>Maybe some diag folks reading this group could help ...
>Matt Accapadi                            AWDnet: matt%mathew@ibmpa.awdpa.ibm.com

I've used 'uname -m' at the command line, or the uname() call
in sys/utsname.h to get unique machine serial numbers on RS/6000's.
On a Sparc, use hostid.

Also read up on odm (object data manager database) to find VPD.

Hope I was some help.
Bill Simpson

wcs@neosoft.com
713/561-7797