HDTenEightyP/NetNews huggingface dataset:
From: twl10@ccc.amdahl.com (Tom Littauer)
Newsgroups: comp.unix.admin
Subject: Re: How do you back up a terabyte?
Date: 16 Dec 92 18:47:47 GMT
Reply-To: twl10@JUTS.ccc.amdahl.com (Tom Littauer)
Organization: Amdahl Corporation, Sunnyvale CA

In article <1992Dec16.161430.1109@cc.ic.ac.uk> cmaae47@imperial.ac.uk writes:
>In article <ericw.724459057@hobbes>, ericw@hobbes.amd.com (Eric Wedaa) writes:
>- 
>- The subject says it all.  "How do you back up a terabyte?"
>
>With great care.

:-)

>- And while I'm at it, how do you fsck at terabyte?
>
>  (1) Write an operating system that handles terabyte big file systems

We did.

>  (2) The fsck then is easy, as it comes with the operating system :-)

Correct.

>Seriously, the biggest unix file system I know of is efs (on CDC and Silicon
>Graphics systems), and that handles 8 Gigabyte filesystems. So for a terabyte 
>you need 128 filesystems, which may not be so convenient - you may actually
>run out of mount points.

Seriously, the Amdahl EFS supports filesystems up to 11 terabytes.

>Finally, with data setss of that size you will have to abandon single
>backups and look for an archiving and file migration system. Masstor is
>a name that comes to mind.

Unitree is another. Configuring the filesystem on or as a RAID 5 is also
useful. Yes, we do both.

I don't want to sound like a commercial here... (well, not *TOO* much
anyway :-). For further details, call your local Amdahl folks or send
email.
-- 
Tom Littauer at Amdahl M/S 278, PO Box 3470, Sunnyvale CA 94088-3470 USA
+1 408 737 5056     twl10@juts.ccc.amdahl.com     twl10@amail.amdahl.com
I'll tell you when I'm speaking as Amdahl's Spokesman - usually I'm not.
V'z n fgrnygu-grpuabybtl rapelcgrq .fvtangher ivehf - TBGPUN!!!
Newsgroups: comp.unix.admin
From: scowen@wfpc3.la.asu.edu (Paul A. Scowen)
Subject: two ethernet cards and X packet routing
Organization: Dept. of Physics & Astronomy, Arizona State University
Date: Tue, 15 Dec 1992 17:17:23 GMT

Hi,

I have a colleague who's got a problem with X packet routing.  He has a Sun
with two ethernet cards that serves as a gateway between a chain of 5-10
workstations and the outside world.  The problem is that this chain needs to
be secure, so accordingly you cannot telnet through this gateway, but instead
have to login to the gateway machine, and then telnet onwards.  Email however
is passed ok.

My friend would like to be able to send X applications out to some display
across the gateway, but everytime he does this he gets the "Unable to open
display" error.  

What is involved in getting this to work - does he have to dismantle the
security such as it is, so that the packets will get out, or is there some
way to make the gateway one-way?  I ask this because I think the .com and
.mil guys have figured this one out.  Any pointers would be very welcome.

Thanks for your time.

-- 
-------------------------------------------------------------------------------
Paul A. Scowen				INTERNET: scowen@wfpc3.la.asu.edu
Department of Physics & Astronomy		  uk1@spacsun.rice.edu
Arizona State University		Tel:      (602) 965-0938
Tempe, AZ 85287-1504			FAX:      (602) 965-7954
-------------------------------------------------------------------------------
Newsgroups: comp.unix.admin,comp.unix.wizards,comp.unix.bsd
From: pgreen@zia.aoc.nrao.edu (Philip Green)
Subject: lpd filters
Organization: National Radio Astronomy Observatory, Socorro NM
Date: Fri, 18 Dec 92 22:14:55 GMT

I need to write or find an existing filter that will check
to make sure a file is color postscript before allowing it
to be printed. Since we only have three or four applications
that will do this I don't believe it will be difficult to
customize the program that does the checking. 
The problem is I can't find any information on lpd or lpr
that I can use to help me create the filter.
The intent is to check the file on the local machine and
then send it to the remote machine were it will be printed.

We are currently running SunOS 4.1.2.

Any help is appreciated.

Thanks
-- 
Phil Green                           	pgreen@aoc.nrao.edu
NRAO					505.835.7294
Newsgroups: comp.unix.admin
From: janet@cs.uwa.oz.au (Janet Jackson)
Subject: Re: How to do a lpq of all queques on printer at once
Organization: Dept. Computer Science, University of Western Australia.
Date: Fri, 18 Dec 1992 00:50:00 GMT

Unlike lpc, lpq doesn't seem to have an "all" option, or the ability
to specify multiple printers.  As far as I can see you have two options:  
- use "lpc status all" or "lpc status queuename1 queuename2 ..."
  to get a rough idea (it will tell you how many jobs in each queue)
- use a shell loop.  In csh:
     foreach p (queuename1 queuename2 ...)
        lpq -P$p
     end


Janet Jackson
<janet@cs.uwa.edu.au>
Systems Administrator
Department of Computer Science
The University of Western Australia
Newsgroups: comp.unix.admin
From: maklinm@cognos.com (Max Maklin)
Subject: Favorite PD tools - Stats, disk hogs, ...
Summary: Want to know the best of the breed in PD admin software
Organization: Cognos Incorporated, Ottawa CANADA
Date: Sun, 13 Dec 1992 22:03:20 GMT

I am in need of collecting some statistics on resource usage of various
Unix machines in terms of CPU load, # of users, disk space growth, ...
Ideally the tool would enable the automatic collection of snapshots and
then summarize appropriately.  I know of various accounting stuff
included with many Unix OSs, but there must be better, high-level stuff
that can answer, "So what has my machine been doing this month compared
to last? ..."

Has anyone compiled a list of useful, updated admin tools that will help
me in this and other stuff like disk hogs, ...

I would initially like this to be run on SCO Unix, Ultrix, and AIX thus
it is my hope that it is portable.  Ideally, they would include makefiles
for each of the popular Unixes, not unlike GNU stuff.

I snarfed watcher from the comp.unix.sources archive, but it looks rather
old.

Any help would be appreciated.

Max
-- 
Max Maklin                                                P.O. Box 9707 
Technical Analyst	                           3755 Riverside Drive
Cognos Incorporated                              Ottawa, Ontario CANADA
Internet: maklinm@cognos.COM                 UUNet: maklinm@cognos.UUCP
Newsgroups: comp.unix.admin,comp.dcom.lans.ethernet,comp.dcom.lans.misc
From: witr@rwwa.COM (Robert Withrow)
Subject: Re: How to network 3-4 home machines cheaply?
Reply-To: witr@rwwa.com
Organization: R.W. Withrow Associates
Distribution: usa
Date: Sat, 12 Dec 1992 18:14:52 GMT

In article <Bz3w55.52o@zoo.toronto.edu>,
 henry@zoo.toronto.edu (Henry Spencer) writes:

| In general, the best way to network small numbers of machines, all in one
| room, under controlled conditions so cable wear and tear is not an issue,
| is either a multiport transceiver with a null Ethernet (thinnet tee with
| a terminator on each branch -- some multiports have such a setup built
| in and accessible via a switch) or transceivers with thin coax.

Assuming PC bus machines, I don't understand why one doesn't just use
typical thinwire-ready boards like WD/SMC/CLONES.  In the non-prime-time
environment the original poster was discussing, I doubt you can get a 
cheaper network.

There are sub-$100 WD-ether clones available (Don't ask me where, I don't
use-em), and the cabing can either be a RAD-SHACK item or you can get
so-called ``lantastic'' cable for cheaps.  The wiring is more of a
hassle than with MP-repeaters, but hey, this is a home setup, right?

I use this setup to network 10-12 machines together in my office, and
reliability hasn't been a problem.  Machines come and leave every
day, and the network changes constantly.  I have a stack of varying
length thinwire cables that gets recycled as the network changes.

Your N-machine cost is:

  N * Cost of each ethernet interface (I use SMC 8013 for compatibility)
  (N-1) * cost of a typical cable segment.
  2 * terminator cost.

If you scrounge, the last two items should cost almost nothing...
 
-- 
 Robert Withrow, Tel: +1 617 598 4480, Fax: +1 617 598 4430, Net: witr@rwwa.COM
 R.W. Withrow Associates, 21 Railroad Ave, Swampscott MA 01907-1821 USA
From: thad@cup.portal.com (Thad P Floryan)
Newsgroups: comp.unix.admin
Subject: Re: How to move a filesytem?
Date: Fri, 18 Dec 92 23:45:20 PST
Organization: The Portal System (TM)
  <Dec18.142941.14163@yuma.ACNS.ColoState.EDU>

In article <Dec18.142941.14163@yuma.ACNS.ColoState.EDU>
dan@lamar.ColoState.EDU (Danilo Silva) writes:

|  [...]
|  Copy the files without changing dates or permissions:
|  
|  # find . -print | cpio -pdum /users_new
|  [...]

Uh, you might want to do the following instead:

find . -depth -print | cpio -pdum /users_new

I've moved 100's of filesystems this way with NO problems whatsoever, and
the dates/times/perms on the directory file(s) are also correctly preserved.

Thad Floryan [ thad@btr.com, thad@cup.portal.com ]
From: marchany@vtserf.cc.vt.edu (Randy Marchany)
Newsgroups: comp.unix.admin
Subject: Site Unix Workstation System Managment - Need tales of experiences
Date: 20 Dec 92 23:14:42 GMT
Organization: Virginia Tech, Blacksburg, VA

Hello. My working group has been charged with developing a plan for
providing remote workstation system management support, in effect,
"rent-a-system-manager". Basically, we would provide system management
services to workstation owners that have no desire to do those functions
themselves. Services provided would include: 1) Resource Mgt 2) User Mgt
3) Standard Admin duties such as TCP, UUCP, security related tasks
4) Disaster REcovery - backup and restores 5) Hardware Installation
6) Software Installation/Maintenance - OS upgrades, 3rd party installs,
etc. We have approximately 400 networked workstations on campus and
anticipate about 40% of them willing to use this service.

I know some commercial and academic sites provide this level of support
where they have some type of site system mgt group that roams around
providing system management support for a large number or workstations.
I would like to hear of the problems/headaches/good things
we may encounter. We are currently looking to offer support for DEC,
Sun, IBM and NEXT Unix boxes. Any hints/advice/warnings would be greatly
appreciated. You can post to the net or send directly to me (I'll
summarize). Thanks in advance. I can be reached at:

	Randy Marchany
	VA Tech Computing Center
	Blacksburg, VA 24060
703-231-9523
INTERNET: marchany@vtserf.cc.vt.edu

Newsgroups: comp.unix.admin,comp.unix.programmer,comp.unix.wizards,comp.sys.sun.admin
From: mouse@thunder.mcrcim.mcgill.edu (der Mouse)
Subject: Re: revisited, determining if anyone else is logged on
Organization: McGill Research Centre for Intelligent Machines
Date: Fri, 18 Dec 92 00:59:58 GMT

In article <1ggn8oINNar1@matt.ksu.ksu.edu>, holland@matt.ksu.ksu.edu (Rich Holland) writes:
> subbarao@fc.hp.com (Kartik Subbarao) writes:

>> I can forge mail.
> Yes, but if the user *replies* to the mail, you're either going to
> (a) get found out, or (b) the reply will bounce and clue them in...

I got news for you...lots of users won't clue in even if you put a big
banner up there "THIS LETTER IS FORGED".  I'm postmaster for McRCIM,
and just recently I got a letter in my mailbox.  Someone had sent mail
to a broken address, saying "hello?".  When it bounced, the user
*replied to the bounce*, saying "hello?" again!

					der Mouse

			    mouse@larry.mcrcim.mcgill.edu
Newsgroups: comp.unix.admin,comp.dcom.lans.ethernet,comp.dcom.lans,comp.dcom.lans.misc
From: slendt@unomaha.edu (Steven Lendt)
Subject: Re: BNC connectors (Was: Re: How to network 3-4 home machines cheaply?)
Organization: University of Nebraska at Omaha
Date: Thu, 17 Dec 1992 23:01:57 GMT

In article <BzF3tH.BAG@ddsw1.mcs.com> karl@ddsw1.mcs.com (Karl Denninger) writes:

>In article <1992Dec14.160613.19205@sci34hub.sci.com> gary@sci34hub.sci.com (Gary Heston) writes:
>>In article <Bz88n7.KCx@ddsw1.mcs.com> karl@ddsw1.mcs.com (Karl Denninger) writes:
>>  [ while discussing thinnet networks ]
>>
>>>Yep.  However, be careful with the connectors.  The "twist on" ones at Rat
>>>Shack look attractive, but have a nasty failure rate if the cable gets
>>>flexed.
>>
>>Incorrect. Flexing the cable has *nothing* to do with it!

>Sure it does.  If you flex the cable you pull the connector loose :-)

The other thing to keep in mind that if you have solid core cable
that flexing the cable a log can cause some nasty fractures in the solid
center core wire.  A damn pain to find the problem too.

>-- 
>Karl Denninger (karl@ddsw1.MCS.COM, <well-connected>!ddsw1!karl)
>Data Line: [+1 312 248-0900] Anon. arch. (nuucp) 00:00-06:00 C[SD]T
>Request file: /u/public/sources/DIRECTORY/README for instructions
 ____________________________________________________________________________
|  Steven Lendt, Campus Network Mgr   |   Internet: slendt@unocdc.unomaha.edu|
|  University of Nebraska at Omaha    |   Bitnet (via gateway):              |
|  Computing and Data Communications  |     slendt%unocdc.unomaha.edu@unlvax1|
|  6001 Dodge Street                  |   Voice Phone (402) 554-2523         |
|  Omaha, NE 68182-0051 USA           |   Fax (402) 554-3475                 |
|  The attention span of a computer is only as long as its electrical cord.  |
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Newsgroups: comp.unix.admin
From: dan@cubmol.bio.columbia.edu (Daniel Zabetakis)
Subject: Quota missing a user
Organization: Columbia University, Dept. of Biological Sciences.
Date: Sat, 12 Dec 1992 20:55:00 GMT


    A user account was created, but a quota was not entered. When I
discovered this, I used edquota to create normal quota limits. But
quota doesn't report the usage. Does quota count only those files created
after the quoat was started?

    The files are owned by the user in question. Quota is working for the
other users.
   Does anyone have any idea why this is happening?

    Thanks for any help you can give. I feel like I should know the answer
to this if I had more experience. If you need more information, but think
you can help, feel free to e-mail.

DanZ

-- 
This article is for entertainment purposes only. Any facts, opinions,
narratives or ideas contained herein are not necessarily true, and do
not necessarily represent the views of any particular person.  

Newsgroups: comp.unix.admin
From: alan@nabeth.enet.dec.com (Alan Rollow - Alan's Home for Wayward Tumbleweeds.)
Subject: Re: How do you back up a terabyte?
Reply-To: alan@nabeth.enet.dec.com (Alan Rollow - Alan's Home for Wayward Tumbleweeds.)
Organization: Digital Equipment Corporation
Date: Thu, 17 Dec 1992 23:47:02 GMT


In article <ericw.724459057@hobbes>, ericw@hobbes.amd.com (Eric Wedaa) writes:
>
>The subject says it all.  "How do you back up a terabyte?"

By having smart backup utilities that understand the data they backup
in appliation specific ways and only backup the parts that have
changed.  Such utilities run continously or as continuously as the
backup media allows.  If efficient use of space and time requires
occasional check points of frequently change large files, then they
take care of the check pointing, probably with assists from the
file system.

For example, modificiations to a system error log are typically
done as append operation.  Further it might be reasonable to assume
that the system error log is not something that needs to be backed up with
great frequency.  An application specific backup program might then
checkpoint the file to backup media and remember where it stopped.
When it decides that the changes need to be backed up it just
copies from that point to the current end of file.

A randomly accessed GB database will probably have backups done as
records change, with an occasional check point when the number of
changes gets too large to be able to restore easily.

>
>And while I'm at it, how do you fsck at terabyte?

You don't.  At least not in the traditional sense.  When it gets that
large you probably journal and expire the changes as they are comitted.
Those not committed can be replayed from the file system journal, quickly
if it is ever necessary.

>
>
>>>>Ericw
>
>--
>Eric Wedaa  -  eric.wedaa@amd.com
>
--
Alan Rollow				alan@nabeth.cxo.dec.com

Newsgroups: comp.unix.admin
From: markb@news.gsfc.nasa.gov (Mark R. Baith)
Subject: How to determine the # of files per tape?
Organization: Goddard Space Flight Center
X-Newsreader: TIN [version 1.1 PL6]
Date: Fri, 11 Dec 1992 18:01:14 GMT


Does anyone have an idea for determining the number of files on a
foreign data tape ? 

(Note: Foreign in the sense that the tape is not a standard UNIX
tar or backup tape...the tape simply contains data files)

                                      -Thanks,

                                         Mark
--
                                    **************************************
                                    * Mark Baith GSC (301)286-5146       *
                                    * Oceans Computing Facility Code 971 *
                                    * NASA Goddard Space Flight Center   *
                                    **************************************
                                    * "markb@neptune.gsfc.nasa.gov"      *
                                    * "baith@ocean1.gsfc.nasa.gov"       *
                                    * "ocean2::baith"                    *
                                    **************************************
From: dtb@otto (David Bath)
Newsgroups: comp.unix.admin
Subject: Re: Favorite PD tools - Stats, disk hogs, ...
Date: 14 Dec 92 10:07:37 GMT
Organization: RMIT Computer Centre
NNTP-Posting-Host: otto.bf.rmit.oz.au

maklinm@cognos.com (Max Maklin) writes:

In my opinion, depending on the Unix you are running, you should check out
sa and the reporting side, sar.

You can set up sa either at boot time or via cron.

I also suggest getting perl, looking at the examples, especially in
.../eg/scan, as this will tell you changes to setuid bits et al and
will form a good template for what you want to do.

Regards

-- 
David T. Bath	Email:dtb@otto.bf.rmit.oz.au	Phone:03-3477511
Global Technology Corporation, 179 Grattan St, CARLTON, VIC, 3153, AUSTRALIA
"Failure to emulate is the best revenge" - Marcus Aurelius
From: twl10@ccc.amdahl.com (Tom Littauer)
Newsgroups: comp.unix.admin
Subject: Re: How do you back up a terabyte?
Date: 18 Dec 92 19:29:02 GMT
Reply-To: twl10@JUTS.ccc.amdahl.com (Tom Littauer)
Organization: Amdahl Corporation, Sunnyvale CA

In article <1992Dec18.135223.13277@bilver.uucp> bill@bilver.uucp (Bill Vermillion) writes:
>In article <herman.724556613@phage> herman@nosc.mil (John W. Herman) writes:
>>twl10@ccc.amdahl.com (Tom Littauer) writes:
>>
>>>In article <1992Dec16.161430.1109@cc.ic.ac.uk> cmaae47@imperial.ac.uk writes:
>>>>In article <ericw.724459057@hobbes>, ericw@hobbes.amd.com (Eric Wedaa) writes:
>
>>>>- The subject says it all.  "How do you back up a terabyte?"
>
>>>>With great care.
>
>>Paper tape.  There is a company which advertizes the ability to back up
>>1 terabyte to a paper tape real.  Honest
>
>Not really a paper tape - the nickname is digital paper.  It's
>a magneto-optical process

Watch the attributions, please. There are no words of mine in the above.

If you've got a terabyte of data and you need to be sure it's safe, I for 
one would never suggest a bleeding-edge technology. I don't mean to say it
isn't good or isn't safe, just that I don't think it's proven itself yet.

This opinion is purely personal; I don't know what the corporate position is.

Tom
-- 
Tom Littauer at Amdahl M/S 278, PO Box 3470, Sunnyvale CA 94088-3470 USA
+1 408 737 5056     twl10@juts.ccc.amdahl.com     twl10@amail.amdahl.com
I'll tell you when I'm speaking as Amdahl's Spokesman - usually I'm not.
V'z n fgrnygu-grpuabybtl rapelcgrq .fvtangher ivehf - TBGPUN!!!
From: ravi@lub001.lamar.edu
Newsgroups: comp.unix.admin
Subject: is this a new finger?
Date: 14 Dec 92 00:39:52 +1700
Organization: Lamar University - Beaumont

Hi!

I am wondering if it is possible to finger someone and find out what that
person is doing. As for as I know, finger uses lastlog and stuff but "w"
uses ps and related stuff to get the info. So, is it really possible to
merge both finger and w into one? Is there any program like that that is
already in use?

This is because I was getting a mail from someone (kind of harassing) telling
me what I am doing! This person was on a remote machine and I can tell that
he didn't log in at that time and there was a lot of "fingerd" activity by
root from his machine! (source : lastcomm)

This is kind of intriguing and I am interested to find out!

E-mail would be great!

Thanks

Ravi Kuppanna
Newsgroups: comp.unix.admin
From: vulture@imperial.ac.uk (Thomas Sippel - Dau)
Subject: Re: What is the capacity of a standard 9track tape
Reply-To: cmaae47@imperial.ac.uk
Organization: Imperial College of Science, Technology and Medicine
Date: Mon, 14 Dec 92 19:18:25 GMT

In article <Bz3J6x.E07@news.cso.uiuc.edu>, ejk@ux2.cso.uiuc.edu (Ed Kubaitis - CCSO) writes (on bytes and gaps):
-   
- Bzzzt! Even a rough first order estimate needs to take block size into
- account. Here are nominal capacities for a 2400' 6250 tape in megabytes
- for various block sizes (in bytes):
- 
-    |Blksz  MBytes
-    |   80       7
-    |  800      53
-    | 2000      92
-    | 4000     122
-    | 8000     145
-    |16000     161
-    |32000     170
-    |64000     174
- 	  
- Attached is the perl script that generated the table.
- 
- ----------------------------------
- Ed Kubaitis (ejk@ux2.cso.uiuc.edu)
- Computing & Communications Services Office - University of Illinois, Urbana
- ================================================================================
- #! /usr/bin/perl
- print "Blksz  MBytes\n";
- for $blksize((80, 800, 2000, 4000, 8000, 16000, 32000, 64000)) {   
-    $cap = $blksize*(2400*12/(($blksize/6250)+.3));
-    printf("%5d     %3d\n", $blksize, $cap/1e6);
-    }

How about enhancing this script to allow for:

   o  other densities (31.5 and 63 bit/mm (or 800, 1600 whatsits))
   o  different interblock gap size in these formats
   o  tape mark (file mark) size
   o  number of label blocks per file (varies across systems and file formats)
   o  number of bytes wasted in the file (strip trainling space in text files)
   o  number of useless bytes introduced by the file format (line images, say)

We'd like to be sure ...

                                    Thomas
-- 
*** This is the operative statement, all previous statements are inoperative.
*   email: cmaae47 @ ic.ac.uk (Thomas Sippel - Dau) (uk.ac.ic on Janet)
*   voice: +44 71 589 5111 x4937 or 4934 (day), or +44 71 823 9497 (fax)
*   snail: Imperial College of Science, Technology and Medicine
*   The Center for Computing Services, Kensington SW7 2BX, Great Britain
Newsgroups: comp.unix.admin,comp.dcom.lans.ethernet,comp.dcom.lans.misc
From: henry@zoo.toronto.edu (Henry Spencer)
Subject: Re: How to network 3-4 home machines cheaply?
Date: Fri, 11 Dec 1992 17:48:40 GMT
Organization: U of Toronto Zoology

In article <1992Dec10.153444.9033@tinman.mke.ab.com> tdphette@mke.ab.com (Thad Phetteplace x4461) writes:
>You cannot directly connect two 10BaseT trancievers...

Wrong, actually.  10BaseT is specifically designed to permit this, with
a suitable crossover cable.

This does not generalize to numbers larger than two.

In general, the best way to network small numbers of machines, all in one
room, under controlled conditions so cable wear and tear is not an issue,
is either a multiport transceiver with a null Ethernet (thinnet tee with
a terminator on each branch -- some multiports have such a setup built
in and accessible via a switch) or transceivers with thin coax.  Check
local prices and get whichever's cheaper.  10BaseT doesn't really pay
until network troubleshooting becomes an issue, due to long distances
or big configurations or both.
-- 
"God willing... we shall return."       | Henry Spencer @ U of Toronto Zoology
       -Gene Cernan, the Moon, Dec 1972 |  henry@zoo.toronto.edu  utzoo!henry