HDTenEightyP/NetNews huggingface dataset:
From: olson@anchor.esd.sgi.com (Dave Olson)
Newsgroups: comp.sys.sgi.admin,comp.sys.sgi
Subject: Re: security concerns revisted
Date: 9 Jan 93 03:28:38 GMT
Organization: Silicon Graphics, Inc.  Mountain View, CA

In <1993Jan8.173044.10208@odin.corp.sgi.com> trant@shire.corp.sgi.com (Ken Trant) writes:

| >As has been discussed here every time this has come up (and as Vernon
| >mentioned in this same thread), the best thing would be to have a script
| >that runs after install, similarly to the autoconfig and confmsg scripts,
| >that asks the user if they want to setup a secure system, and walks them
| >through it in a script.  That may still happen for a future release.
| 
|  Running COPS would give you a very good jump start to securing a system,
| it is in the public domain, and runs on SGI systems.

COPS does *nothing* in and of itself to secure a system.  All it does
is point to a series of (potential) problems that COPS already knows
about.

We are talking about a script that allows a customer at installation
time (or later on) to actually configure the system to be reasonably
secure (for more than "reasonably secure", buy our 'secure' version
of the OS, called TIRIX).
--
Let no one tell me that silence gives consent,  |   Dave Olson
because whoever is silent dissents.             |   Silicon Graphics, Inc.
    Maria Isabel Barreno                        |   olson@sgi.com
Newsgroups: comp.sys.sgi.admin
From: clk@ernie.Princeton.EDU (Christopher Kranz)
Subject: detecting crash dumps on boot?
Originator: news@nimaster
Organization: Princeton University
Date: Tue, 12 Jan 1993 15:57:43 GMT

Is it possible to determine if a crash dump exists before /etc/savecore
runs?

What I'd like to do is determine if a crash dump exists on the swap device
before /etc/savecore runs and then make room for the vmcore file that
/etc/savecore creates by deleteing other files in the same file system.

I've got a rather large scratch space where users keep large temporary
files.  I don't want to delete them if I don't have to, just when I need to
make room for a crash dump.

Any useful suggestions (or even guesses) would be appreciated.  Thanks.


	Christopher Kranz
	clk@princeton.edu
--
Christopher Kranz                  |  internet:  clk@Princeton.EDU
Systems Programmer, UNIX Systems   |    BITNET:  clk@PUCC
Princeton University               |      UUCP:  princeton!clk
87 Prospect Avenue, Room 200       |     Voice:  609-258-6033/6000
Princeton, NJ  08544               |       FAX:  609-258-3943
-- 
Christopher Kranz                  |  internet:  clk@Princeton.EDU
Systems Programmer, UNIX Systems   |    BITNET:  clk@PUCC
Princeton University               |      UUCP:  princeton!clk
87 Prospect Avenue, Room 200       |     Voice:  609-258-6033/6000
Newsgroups: comp.sys.sgi.admin
From: Quentin.Smart@bbs.actrix.gen.nz
Subject: Re: UNIX to Word Perfect Office e_mail
Organization: Actrix Information Exchange
Date: Tue, 12 Jan 1993 06:33:50 GMT
Keywords: e-mail

In article <1993Jan7.131530.21147@gov.on.ca> plattd@gov.on.ca (Dave Platt) writes:
> We are currently implementing a Laboratory Information Management
> system, using Oracle, on an SGI 340.  The application is to inform 
> users of data exception conditions using UNIX Mail.  We have already 
> implemented an e-mail system using Word Perfect Office on a Novell
> network and would prefer not to maintain parrallel systems.  Is 
> anyone aware of a way to make UNIX e-mail talk to Word Perfect Office
> e-mail and vice versa.

Yes there are two solutions that I know of:
   Buy WP Office for Unix (I think this only runs on a SCO box), this
   product has a built in SMTP gateway. And administer another WPO host.

   Buy iGate, this is a comercial SMTP to WP Office gateway.
   It is relativly easy to install and integrates well with WPO. It
   requires a WPO Connection server (If you have more than one WPO host you
   will be running this allready, plus a dedicated PC running the SMTP
   software.

For further information on iGate you can mail smart@actrix.gen.nz

Quentin.
From: achim@video1.han.de (Joachim Gothe)
Newsgroups: comp.sys.sgi.admin
Subject: Netvisualizer - need info
Date: Tue, 05 Jan 1993 21:53:00 GMT
Reply-To: achim@video1.han.de  (Joachim Gothe)
Organization: System-Manager FH-Hannover FB Kunst&Design
X-Newsreader: Arn V1.00

Hi,

how usable is the "Netvisualizer" from SGI, when I want to maintenance
a Ether-Network of: TCP/IP, Ethertalk, Novell, ....  ???

Sometimes (not all the Time, but more and more) our Ethernet is overloaded.
I want to find the Computers, which overload the Net and I want to
observe our external Logins.

What does "Spectrum" more than Netvisualizer, and how much more does it
cost?

Thanks,

Achim

--------------------------------__
   Joachim  Gothe	       ///   Home: achim@video1.han.de
  Haltenhoffstr. 237	  __  /// !!NEW!!:-------^^^^^^^^^^^^^
  FRG 3000 Hannover	  \\\///     Work: FH-Hannover, FB Kunst & Design
VOC +49 511 7975-15 FAX-16 \XX/ * Waiting for a Mac-Emulator on Indigos *
From: ramsey@sundance.llnl.gov (Susanne B. Ramsey)
Newsgroups: comp.sys.sgi.admin
Subject: Re: mail and syslog - new admin question
Date: 12 Jan 93 23:26:27 GMT
Organization: Magnetic Fusion Energy - LLNL

ramsey@sundance.llnl.gov (Susanne B. Ramsey) writes:

> I am configuring mail on the SGIs we just got and I have a question about
> the entries in SYSLOG

> On my SUN systems when a mail message is sent or received the system log
> file syslog has a entry for "to=" and "from=" ...  On the SGI when I send
> or receive a message the SYSLOG file just has a "from=" message on it..  


> QUESTION - what on the SGIs do I change so that SYSLOG will show a "to=" and
> "from="

> Many thanks

> Susanne Ramsey
> sbr@llnl.gov

well I thought I had it working - however when we try and receive from 
offsite I get the following errors in SYSLOG


Jan 12 15:01:59 elvis sendmail[2259]: AA02259: SYSERR: Loop while matching ruleset 0, line 481
Jan 12 15:01:59 elvis sendmail[2259]: AA02259: SYSERR: Loop while matching ruleset 0, line 482
Jan 12 15:01:59 elvis sendmail[2259]: AA02259: SYSERR: rewrite: expansion too long: Connection refused by acl.lanl.gov
Jan 12 15:01:59 elvis sendmail[2259]: Could not verify sender: <zippy@acl.lanl.gov>
Jan 12 15:02:04 elvis sendmail[2263]: AA02263: SYSERR: Loop while matching ruleset 0, line 481
Jan 12 15:02:04 elvis sendmail[2263]: AA02263: SYSERR: Loop while matching ruleset 0, line 482
Jan 12 15:02:04 elvis sendmail[2261]: AA02261: SYSERR: Loop while matching ruleset 0, line 481
Jan 12 15:02:04 elvis sendmail[2261]: AA02261: SYSERR: Loop while matching ruleset 0, line 482
Jan 12 15:02:05 elvis sendmail[2263]: AA02263: SYSERR: Loop while matching ruleset 0, line 564: Connection refused by acl.
lanl.gov
Jan 12 15:02:06 elvis sendmail[2261]: AA02261: SYSERR: Loop while matching ruleset 0, line 564: Connection refused by acl.
lanl.gov
Jan 12 15:02:06 elvis sendmail[2263]: AA02263: SYSERR: Loop while matching ruleset 0, line 566
Jan 12 15:02:06 elvis sendmail[2263]: AA02263: SYSERR: Loop while matching ruleset 0, line 582
Jan 12 15:02:06 elvis sendmail[2261]: AA02261: SYSERR: Loop while matching ruleset 0, line 566


any hints to what I need to do to fix this error...

Again - Many thanks

Susanne Ramsey
--
 Susanne B. Ramsey	     Lawrence Livermore National Laboratory
 7000 East Avenue L-630	  |  (510) 423-9530
 Livermore Ca 94550	  |  sbr@llnl.gov
_____________________________________________________________________
Fertility is hereditary.  If your parents didn't have any children, neither 
will you.
Newsgroups: comp.sys.sgi.admin
From: architec@cs.curtin.edu.au (Phil Dench)
Subject: Re: using non-sgi cdrom drive for install
Keywords: install, cdrom drive
Organization: Curtin University of Technology
Date: Thu, 7 Jan 1993 05:42:53 GMT

apian@ise.fhg.de (Peter Apian-Bennewitz) writes:

>Hi & happy new year,

>I know that this has been discussed before, but
>didn't found any references. sorry is its FAQ.
>It is also clear that all the questions are answered
>by buying a sgi cd drive. Just out of curiousity,
>how do I install stuff via a non-sgi cd drive,
>attached to a remote non-sgi workstation ?

<stuff deleted>

as dave olson says in his reply to your comp.sys.sgi article
there is a thing called efslook that I wrote to read an SG
inst disk from a sun. If you still want it, i can send you a copy.

Phil
From: blbates@aero36.larc.nasa.gov (Brent L. Bates ViGYAN AAD/TAB)
Newsgroups: comp.sys.sgi.admin
Subject: Re:  Printing with lpr on an IRIS
Date: 8 Jan 93 14:53:36 GMT


     We aren't using any filters.  PostScript or printer native files are sent
using lpr.  Our SysOp has written a script that will preprocess files, under
user controlled text menues, and use lpr to send the resulting file to the
apropriate printer.
     It seems that SGI's definition of not supported, means that since there
is no GUI for lpr then it's not `supported'.

  Brent L. Bates				Phone:(804) 864-2854
  M.S. 361			  		  FAX:(804) 864-8469
  NASA Langley Research Center
  Hampton, Virginia  23681-0001
  E-mail: blbates@aero36.larc.nasa.gov or blbates@aero00.larc.nasa.gov
From: scotth@oniboshi.corp.sgi.com (Scott Henry)
Newsgroups: comp.sys.sgi.admin
Subject: Re: NTP Time?
Date: 4 Jan 93 23:07:12 GMT
Organization: Silicon Graphics Inc, Mountain View, CA


>>>>> In article <C08w97.6BD@rahul.net>, jonathan@rahul.net (Jonathan Heiliger) writes:

jonathan>     I recently FTPed the NTP time server software and have
jonathan> tried compiling it on my SGI running IRIX 4.0.5
jonathan> However...with no luck.  Has anyone gotten this to compile,
jonathan> or can suggest an alternate time package?  Thanks.

I did a port of xntp (the NTP V2 spec) awhile ago. Both binaries &
patches to the source are available for anonymous FTP from
sgigate.sgi.com in the directory ~ftp/net-services/xntp. Usual
disclaimer about unsupported software applies.

Maybe this should be in the FAQ?

It's always reasonable to look around the anonymous FTP directories on
sgi.com and sgigate.sgi.com (which are two different machines on two
different internet connections).

=-=-=-=-=
Newsgroups: comp.sys.sgi.admin,comp.sys.sgi,misc.jobs.offered
From: ljs@netcom.com (Linda Siegel)
Subject: Senior System/Network Administrator - LucasArts, Marin Co.
Followup-To: poster
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Date: Sun, 10 Jan 1993 21:32:52 GMT

Distribution: na


Subject:  Senior UNIX Systems/Network Administrator

Industrial Light & Magic is the leader in creating visual effects 
for motion pictures, television and theme-park attractions.  
ILM has contributed its creative and technical expertise to more
than 70 films and has won 11 academy awards (most recently for
"TERMINATOR 2").  

ILM is also the industry leader in utilizing new, state-of-the-art 
digital and computer graphics technology.  We are seeking a senior
systems/network administrator to manage and grow our networks for
our increasing high-volume data requirements.  As part of the ILM team,
you'll have the opportunity to work with very creative and imaginative
people in a fast-paced production environment.  You'll be a member of a
small Computer Services staff with broad support responsibilities.  

Responsibilities:
=================
As the lead systems/network administrator you will provide
direction and leadership for network planning and optimization.

Your day-to-day activities will include:

o Research, evaluate and recommend emerging network technology.

o Analyze troubleshoot and optimize production networks.  
  
o Plan, analyze and tune system performance of our SGI and Sun workstations.

o Communicate with project and department managers to ensure network 
  and computing systems are performing adequately.

o Develop procedures and programs to manage installation and administration
  of all workstation software (OS, graphics-specific, and other software).

o Define, improve, develop and monitor data backup of our 
  high-volume data.

o Troubleshoot software problems.

o Assist with workstation installation, configuration and administration.


Qualifications:
===============
o BS in Computer Science (or 4 years related experience in place 
  of educational requirement).

o Minimum 4 years experience in system and network administration, 
  preferably in a large workstation environment including SGI and 
  Sun systems.

o Demonstrated understanding of networking fundamentals and 
  state-of-the-art technology including: TCP/IP, network analysis,
  routers, NFS, FDDI and  broadband networks.

o Working knowledge of UNIX (System VR4, c-shell, awk) and C.

o Ability to work in fast-paced production environment.

o Strong verbal and written communication skills.


Who to Contact
==============
We are accepting resumes by US mail only. If you are interested
in this position, please send a cover letter, resume and 
salary history to:

	Human Resources  
	Mail-Stop DS
	LucasArts Entertainment Company
	P.O. Box 2009
	San Rafael, CA  94912

Please do not respond to this account.
From: dave@mando.mit.edu (David Smith)
Newsgroups: comp.sys.sgi.admin
Subject: Re: anonymous ftp attempt
Date: 4 Jan 93 21:46:59 GMT

Well thanks for the responses - nslookup was the answer but the
result was Non-existent host/domain so i guess it was not a legitimate
attempt. I'll have to watch for more. Anyways thanks dave
Newsgroups: comp.sys.sgi.admin
From: jdt@ulysses.att.com (Jonathan D. Trudel[ftd])
Subject: New Sysadmin - hardware questions
Date: Mon, 11 Jan 1993 18:46:19 GMT
Reply-To: jdt@ulysses.att.com
Organization: AT&T Bell Labs, Murray Hill, NJ


Hello,
 
I'm quite new to using SGIs and I had a couple of questions.

First of all, is it necessary to use hardware links in /dev for newly
attached disk drives?  Coming from a Sun environment, I'm more used to 
mounting the actual devices as file systems instead of things like
/dev/disk1.  I like to see what hardware is being used where, and since 
you're really using the same major and minor device numbers of, say
/dev/dsk/jag0d1s7, what's the harm?

Secondly, I've been told that the system really doesn't care what SCSI
device numbers you use on the SCSI chaains, so long as the id isn't 0.
True?  Does the system just recognize what a device is by probing the
bus or something?

Can I get a machine to run its administrative tools with the 
display on another (part of the faq, perhaps?)?  On my SGI server,
it complains that it "can't access a needed shared library".
How do I set it up right?

Lastly, how do I create tape drives on a SCSI bus?  I would like to
set up an exabyte 8500C on the system, but how do I go about using the 
compressed and non-compressed modes?  I know you use different minor
numbers on the device to get the different modes, but how do I space
the numbers to get it right?  On a Sun, for example, the base number is
the tape drive with rewind, and the base number+4 is no rewind, and so on.
Any suggestions would be appreciated.


Thanks for any help you can give.

						Jon
From: ce095@cleveland.Freenet.Edu (Jeffrey Scott Traigle)
Newsgroups: comp.sys.sgi.admin
Subject: Re: whatis database question
Date: 4 Jan 1993 19:20:33 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: ce095@cleveland.Freenet.Edu (Jeffrey Scott Traigle)
NNTP-Posting-Host: hela.ins.cwru.edu


Well, for some very strange reason, I was able to compile the whatis
database this afternoon even though it didn't work last night. One
of those ever present phantom problems. Thanks for those who responded.
From: vjs@rhyolite.wpd.sgi.com (Vernon Schryver)
Newsgroups: comp.sys.sgi.admin
Subject: Re: timed
Date: 12 Jan 93 17:17:56 GMT
Organization: Silicon Graphics, Inc.  Mountain View, CA

In article <long.55.0@vax.ox.ac.uk>, long@vax.ox.ac.uk (Neil J. Long) writes:
> Hi
> I have been trying to get a group of 5 Indigos to keep time and I have this 
> slight problem with timed since there are a few other machines running timed 
> but with the wrong time on the same network.
> I have been using xntpd to keep one machine set right relative to 3 others 
> sync'd to 3 other radio controlled beasts and that one machine is running 
> timed -M -F localhost
> So it should be master and not permit its clock to be changed other than by 
> the xntpd daemon.
> The problem is that for the other sgi's I cannot seem to start timed so that 
> they listen only to the master and ignore the other ones on the net which 
> are wrong.
> The problem is that the other machines are in other departments, etc and 
> their SuperUsers never seem to read their email form me suggesting they set 
> their clocks (which would be pointless unless everyone can be reached and 
> set all their clocks before re-starting timed).
> Has anyone ever found a simple solution to this or do I need re-read the man 
> pages!
> Maybe if I define a 'network' such that the other machines aren't part of it?
> thanks
> Neil


Timed cannot solve such problems.  If all of the people operating a
single network cannot compromise on a single notion of "now", then you
cannot use timed.

Recall that the protocol used by timed, TSP, is a broadcast protocol.
It was designed to allow machines to discover the current time without
being especially configured to find a time master.

In such a crazy environment, where people cannot agree on the time, I
would use either (x)ntpd or timeslave instead of timed.

Please note that "master" is not quite the right word for the machine
that is averaging other machine's time.  "Moderator" is has much more
appropriate connotations.



Vernon Schryver,  vjs@sgi.com
Newsgroups: comp.sys.sgi.admin
From: jiang@csbser.csb.yale.edu (Jianxin Jiang)
Subject: tcsh on Indigo
Keywords: tcsh, Indigo 
Organization: Center for Structural Biology, Yale University
Date: Mon, 11 Jan 1993 17:40:30 GMT

Hello,

     Could someone please tell me where I can get the tcsh package for SGI?
Thanks!

						Jiang
Newsgroups: comp.sys.sgi.admin
From: guy@wmsg02.wm.estec.esa.nl (Guy Brooker)
Subject: Re:  Printing with lpr on an IRIS
Organization: ESA/Estec/WMS, Noordwijk, The Netherlands
Date: Fri, 8 Jan 1993 10:33:31 GMT

In article <34908@adm.brl.mil>, blbates@aero36.larc.nasa.gov (Brent L. Bates ViGYAN AAD/TAB) writes:
 > Mehmet D Ertas <ertas@athena.mit.edu> writes:
 >     "SGI supports printing with lpr only if the printer's on
 >      a non-sgi machine, but not vice versa, as far as I can tell."
 > 
 >      Hogwash!  We have printers on SGI's and Sun's and use lpr exclusively
 > to send files to from ALL machines and with no problems.  Just manually set
 > up your printcap and hosts.lpd files the same as you would on any standard
 > BSD UNIX machine.  Currently we are using parallel ports on our SGI's for
 > the printers, however I know of people who use the serial ports too.
 > Good luck.
 > 
 >   Brent L. Bates				Phone:(804) 864-2854
 >   M.S. 361			  		  FAX:(804) 864-8469
 >   NASA Langley Research Center
 >   Hampton, Virginia  23681-0001
 >   E-mail: blbates@aero36.larc.nasa.gov or blbates@aero00.larc.nasa.gov

OK, but what do you use for the BSD filters ?? Our suns have NeWSprint (as
probably do yours) which is not portable to SGIs.
So what does a typical entry in you SGI printcap looklike for a postscript printer on the parallel port ?

Why does SGI state in the system admin manual "Sillicon Graphics, Inc. does not support using lpr on your system to access a printer that is connected directly to your system ?" Are there some bugs in the sgi implementation of lpr ? Is it just that it is not in the prefered flavour of System V ?

Guy

-- 

-------------------------------------        	Guy Brooker
Internet: guy@wm.estec.esa.nl        		European Space Research and
	  guy@estwm0.dnet.estec.esa.nl		Technology Centre (ESTEC)
	  gbrooker@estec.esa.nl
Bitnet  : gbrooker@estec		SPAN    : ESTERS::GUY
Phone	: +31-1719-83611		Fax	: +31-1719-85617
Mail	: ESTEC JW/WMS, Keplerlaan 1, 2200AG NOORDWIJK, The Netherlands

Newsgroups: comp.sys.sgi.admin
From: jdt@ulysses.att.com (Jonathan D. Trudel[ftd])
Subject: Re: How to boot from 2nd disk with 1st installed as well?
Date: Tue, 12 Jan 1993 16:05:23 GMT
Reply-To: jdt@ulysses.att.com
Organization: AT&T Bell Labs, Murray Hill, NJ

In article <1993Jan11.144142.19697@cs.ruu.nl>, edwin@cs.ruu.nl (Edwin Kremer) writes:
|> Well, it boots, but still seems to want to use the 1st  SCSI  disk  (the
|> original system disk in the lowest slot) for root and /usr filesystem.
|> 
|> What other options do I need to `normally' boot from the 2nd disk? 

Did you modify /etc/fstab properly, or does it refer to the original disk?
From: knobi@knobi.munich.sgi.com (Martin Knoblauch)
Newsgroups: comp.sys.sgi.admin
Subject: Re: Suppressing banner page when printing
Date: 7 Jan 93 16:47:12 GMT
Organization: Silicon Graphics, Inc.
NNTP-Posting-Host: knobi.munich.sgi.com

In article <C0HrK1.G4J@knot.ccs.queensu.ca>,
tarun@psyclops.psyc.queensu.ca (Tarun Kripalani) writes:
|> I know there is a way of suppressing the banner page
|> by modifying a variable(?) in a particular file.
|> Problem is I don't know which file it is. Any clues?
|> 
|> -- 
|> 
|> Tarun Kripalani 
|> e-mail:   tarun@psyclops.psyc.queensu.ca
|> 
|>
________________________________________________________________________
_____

Look in '/usr/spool/lp/interface/your_printer_name' on the machine
where the printer is physically attached.

  The variable to set is BANNER (=0). Be sure to stop/start the printer
scheduler to make the change effective (/usr/lib/lpshut and
/usr/lib/lpsched).

Martin
-- 
+---------------------------------+----------------------------------+
|Martin Knoblauch                 | Silicon Graphics GmbH            |
|Application Support              | Am Hochacker 3 - Technopark      |
|Silicon Graphics Computer Systems| W-8011 Grasbrunn-Neukeferloh, FRG|
|                                 | Phone: (+int) 89 46108-179 or -0 |
|                                 | Fax:   (+int) 89 46108-222       |
+---------------------------------+----------------------------------+
|Network: <knobi@sgi.com>         | V-Mail: 8935   | M/S: IMU-315    |
+--------------------------------------------------------------------+
Newsgroups: comp.sys.sgi.admin
From: jdt@ulysses.att.com (Jonathan D. Trudel[ftd])
Subject:  questions II: the wrath of Jon
Date: Mon, 11 Jan 1993 22:16:50 GMT
Reply-To: jdt@ulysses.att.com
Organization: AT&T Bell Labs, Murray Hill, NJ

What is the maximum partition size that's allowed on an SGI?
Suns have a limit of about 2.07 Gig.  Being that disks these days 
are well above that (the Seagate Elite III's 3.5 unformatted disk
comes to mind), I'd like to know how big a partition that
the system can use. 
Newsgroups: comp.sys.sgi.admin
From: miguel@boytoy.csd.sgi.com (Michael/Miguel Sanchez)
Subject: Re: Suppressing banner page when printing
Organization: Silicon Graphics, Inc.
Date: Thu, 7 Jan 1993 17:13:27 GMT

In article <C0HrK1.G4J@knot.ccs.queensu.ca>, tarun@psyclops.psyc.queensu.ca (Tarun Kripalani) writes:
|> I know there is a way of suppressing the banner page
|> by modifying a variable(?) in a particular file.
|> Problem is I don't know which file it is. Any clues?
|> 
|> -- 
|> 
|> Tarun Kripalani 
|> e-mail:   tarun@psyclops.psyc.queensu.ca
|> 
|> ____________________________________________________________________________


look in the file /usr/spool/lp/interface/nameofprinter where nameofprinter
is the name of the printer that you want to turn the banner off on...in that
script file look for BANNER= line.  The script comments explain the setting of
either setting it for 1 to have banners print or setting it to 0 for turning
banners off.


-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Miguel (Michael) J. Sanchez
miguel@csd.sgi.com			
Member Technical Staff, Silicon Graphics, Inc.