Subject: Linux-Misc Digest #833
From: Digestifier <Linux-Misc-Request@senator-bedfellow.MIT.EDU>
To: Linux-Misc@senator-bedfellow.MIT.EDU
Reply-To: Linux-Misc@senator-bedfellow.MIT.EDU
Date:     Sat, 19 Mar 94 01:13:10 EST

Linux-Misc Digest #833, Volume #1                Sat, 19 Mar 94 01:13:10 EST

Contents:
  Re: Effective rights in Linux/Unix (Michael Legg)
  Re: How big is the Linux community? (Andreas Helke)
  Re: Orchid F1280 VLB-related crashe (linux) (hkennedy@mercury.ncat.edu)
  Re: Linux pronounciation HOWTO (Joseph W. Vigneau)
  Starting a Linux Bibliography (James H. Haynes)
  Re: FAQ: Cut & Paste from (Mark Lord)
  x3270 source code? (Juan A. Varela F.)
  Ncurses and BackTab (Vernon J. Muhlbaier)
  tcpdump and SLIP (Rob Newberry)
  Re: Linux pronounciation HOWTO (Robert Moser)
  Re: PCI IDE is *not* just IDE on another bus... (Dominik Kubla)
  Re: FAQ: Cut & Paste from (Rick Emerson)
  Re: linux & thinkpad 750c (2.88 drive) (Christopher L Seawood)
  Re: BRACE YOURSELF, was Re: Opinions wanted about SCO-unix (vs AIX/Linux). (Bill Vermillion)

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

From: ez005403@hamlet.ucdavis.edu (Michael Legg)
Subject: Re: Effective rights in Linux/Unix
Date: Wed, 16 Mar 1994 18:37:53 GMT

        Well I stayed up last nite till about 3:00.  I figured out what my 
problem was.  I was trying to change the u+s on a link, not the actual file.
csh->tcsh.  I tried it on sh at it worked fine.  Thanks for the responses 
though. I know that this was a general unix question, but why should I 
have to go to a unix group?  Isn't linux unix? 

For those who responded thanks,

-Michael Legg


Michael Legg (ez005403@othello.ucdavis.edu) wrote:
:       I was wondering if anyone could tell me some information on hove 
: effective rights work in Linux/Unix. (a nice rfc would be nice, though I 
: did not see one on the topic.) I am currently interested in creating a 
: back door so that if anything ever happens to the root password I will 
: have a way in. I know that there is a way to run a file and inherrit the 
: rights associated with the file, but I can not seem to find exactly how 
: to do it.  For instance I want to create a shell that is owned by root 
: and lets any user become root when it is run because it gives them the 
: effective uid of root.  Now that I can not figure this out I am 
: interested in general how the effective rights work, and what real use 
: they have other than allowing cheesy back doors |-).

: -Thanks,
:       Michael Legg


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

From: andreas@orion.mgen.uni-heidelberg.de (Andreas Helke)
Subject: Re: How big is the Linux community?
Date: 16 Mar 1994 18:34:44 GMT

zachary brown (zbrown@lynx.dac.neu.edu) wrote:
: These newsgroups are like windows into a world we can't enter.

: What efforts are being made, if any, to find out how many computers are
: running linux? I heard something awhile ago about sending mail somewhere
: to be counted. How is that going (and how do I sign into it)?

I think one of the best figures is the estimated number of readers
of the comp.os.linux tree appearing in news.lists. This was about
70000 when I last looked some months ago. Probably almost every reader
is using linux and these represent only a part of the Linux community.
I know several people who use Linux but do not read the news. The
email counter has currently about 5000 entrys. This is less than 5 %
of the Linux users. The statistics of the counter give hints how Linux
use is distributed over the world, but it does not give a hint about 
the size of the Linux community. 

: I know that FTP sites take e-mail addresses as passwords and log all
: file transfers with that address. Why not just count each e-mail address
: once if it has downloaded the linux A series? If the various mirrors got
: together on it, a practical estimate could be established.

There are far to much mirror sites to make this practical. Almost every
university has a linux ftp mirror.

Andreas
--

Andreas Helke

Institut fuer molekulare Genetik, Universitaet Heidelberg
Im Neuenheimer Feld 230 
69122 Heidelberg

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

Crossposted-To: comp.windows.x.i386unix
From: hkennedy@mercury.ncat.edu
Subject: Re: Orchid F1280 VLB-related crashe (linux)
Date: Wed, 16 Mar 1994 16:10:46 GMT

In article <2m6apt$j2t@hip-hop.hh.sbay.org> dave@hh.sbay.org (David L. Black) writes:
>I've experienced occasional lockups on my system running Linux 0.99.15
>and 1.0, but *only when actively using X Windows*, specifically the 
>XFree86-2.0 XF86_S3 server.

I have a similiar problem what chipset do you have? 

>
>My SCSI adapter (Adaptec 1542B) is hung (light ON),
>and for a while I thought the host adapter was at fault, but I dunno
>now - it runs fine if I don't get on the console and start playing
>around.

I posted a similiar message and the linux scsi folks think the problem is
xfree. I tried xfree 2.1 and got the same crashes. One poster said the
problem was linux and scsi. 

I know this does not help much, but that's the best I know now.

Later

Helen



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

From: joev@otter.WPI.EDU (Joseph W. Vigneau)
Subject: Re: Linux pronounciation HOWTO
Date: 18 Mar 1994 22:04:07 GMT

In article <1994Mar18.180753.16769@cs.cornell.edu>,
Matt Welsh <mdw@cs.cornell.edu> wrote:
>
>I have included these sounds on my Linux WWW page, which you can access
>with your favourite WWW client (such as Mosaic) at the URL:
>       http://sunsite.unc.edu/mdw/linux.html
>
>Of course, you'll need to be able to play sound through your WWW client;
>Mosaic fires off as process called "showaudio" to do this. I have
>"showaudio" linked to /usr/local/bin/play on SunOS systems, which
>does the trick.

I created a script in my /usr/bin directory called showaudio:

----cut here------
#!/bin/sh

cat $1 > /dev/audio
----cut here------

Works like a charm.

-- 
joev@wpi.edu, joev@hotblack.schunix.dmc.com     WPI Computer Science     Linux!
    <a href="http://realsoon.wpi.edu:8080/~joev"> Click Here! </a>

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

From: haynes@cats.ucsc.edu (James H. Haynes)
Crossposted-To: comp.os.linux.admin,comp.os.linux.development
Subject: Starting a Linux Bibliography
Date: 18 Mar 1994 05:52:29 GMT


I'm starting a bibliography of publications likely to be helpful in the
Linux community.  Please send me information about things you think should
be included.  The following is what I have for a starter.  When there's more
I will probably turn it into a HOWTO file and post it periodically.
Please include your comments on the items so it become an annotated
bibliography.


I. Hardware

   Upgrading and Repairing PCs; Mueller, Scott; Que Corp.; ISBN 0-88022-856-3;
   1298pp; 2nd ed. 1992; $34.95 (USA).  This is a book I bought when I was
   struggling with an AT-clone.  It is best on XTs and ATs and IBM PS/2s. 
   Still, there is a wealth of information common to all models.  EISA and
   VESA are mentioned only in the glossary.

   80386 Hardware Reference Manual; Intel Corp.; ISBN 1-55512-024-5; ?pp.;
   1986; $?.  Pin connections, timing, waveforms, block diagrams, voltages,
   all that kind of stuff.


II. Processor architecture and programming

    80386 Programmer's Reference Manual; Intel Corp.; ISBN 1-55512-022-9;
    ?pp.; 1986; $?.  Part I. Applications Programming, data types, memory
    model, instruction set.  Part II. Systems Programming, architecture,
    memory management, protection, multitasking, I/O, exceptions and
    interrupts, initialization, coprocessing and multiprocessing. Part III.
    Compatibility (with earlier x86 machines).  Part IV. Instruction Set.

    80386 System Software Writer's Guide; Intel Corp.; ISBN 1-55512-023-7;
    ?pp.; 1987; $?.  This explains the 386 features for operating system
    writers.  It includes a chapter on Unix implementation.  A lot of the
    80386 architecture seems to have been designed with Multics in mind;
    the features are not used by DOS or by Unix.

    Programming the 80386; Crawford, John H., and Gelsinger, Patrick P.;
    Sybex; ISBN 0-89588-381-3; 774pp.; $26.95 (USA).  This is the book the
    Jolitzes used when they ported BSD to the 386 architecture.

    Pentium Processor User's Manual: Volume 3, Architecture and Programming
    Manual; Intel Corp.; ISBN 1-55512-195-0; ?pp.; 1993; $?.  Pretty much
    the Pentium version of the 80386 Programmer's manual listed above.


III. Unix Kernel Implementation

     The Design of the Unix Operating System; Bach, Maurice J.; Prentice-
     Hall; ISBN 0-13-201799-7; 470pp.; $60 (USA).  The book that got Linus
     started.

     The Design and Implementation of the 4.3BSD Unix Operating System;
     Leffler, Samuel J., McKusick, Marshall Kirk, Karels, Michael J., and
     Quarterman, John S.; Addison-Wesley; ISBN 0-201-06196-1; 471 pp.;
     1989, 1990; $44.95 (USA).  So, it's not about Linux, but can you
     afford to ignore it?

     Kernel Hacker's Guide; Linux Documentation Project; FTP sites;
     1994.

IV. System Calls

    The Posix.1 Standard: A Programmer's Guide; Zlotnick, Fred; Benjamin/
    Cummings; ISBN 0-8053-9605-5; 379pp.; 1991; $35.95 (USA).  When I
    complained about the lack of Section 2 man pages in Linux, somebody
    told me just to get a POSIX book, because that's what Linux does.
    I like this book because I'm not a professional programmer and the
    author gives copious explanations and examples.  


V. Networking

   Unix Network Programming; Stevens. W. Richard; PTR Prentice Hall;
   ISBN 0-13-949876-1; 772 pp.; $54 (USA).  Everything you might want to
   know about the subject, and some things you probably don't want to
   know (really, XNS!?).

   Networking Guide; Linux Documentation Project; FTP sites; 1993.

VI. General (or hard-to-classify)

   Bell System Technical Journal, July-August 1978, Vol. 57, No. 6, part 2;
   AT&T; 416 pp.  Many papers on Unix, including Ritchie & Thompson,
   "The UNIX Time Sharing System"; Thompson, "UNIX Implementation";
   Ritchie, "A Retrospective"; Bourne, "The UNIX Shell"...

VII. System Installation

     Linux Installation and Getting Started; Linux Documentation Project;
     FTP sites; 175 pp.; 1994.

VIII. System Administration

     Linux System Administrator's Guide; Linux Documentation Project;
     FTP sites; 1993.
-- 
haynes@cats.ucsc.edu
haynes@cats.bitnet

"Ya can talk all ya wanna, but it's dif'rent than it was!"
"No it aint!  But ya gotta know the territory!"
        Meredith Willson: "The Music Man"


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

From: mlord@bnr.ca (Mark Lord)
Subject: Re: FAQ: Cut & Paste from
Date: 18 Mar 1994 23:53:02 GMT

In article <1.5948.2381.0N27C11C@dscmail.com> rick.emerson@dscmail.com writes:
>
>Er, I spoke a little too soon.  Although selection did work as billed,
>after a while, things got weird.  First, clicking the left button
>(Logitech mouse) didn't produce a cursor.  I also run X Windows and

Don't forget -tlogi  on the command line for selection  (rc.local).
-- 
mlord@bnr.ca    Mark Lord       BNR Ottawa,Canada       613-763-7482

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

Date: Thu, 17 Mar 1994 23:52:13 CST
From: Juan A. Varela F. <U35334@uicvm.uic.edu>
Crossposted-To: comp.os.linux.help
Subject: x3270 source code?

Can anybody point me on the direction of the x3270 source code?  I would really
appreciate any help on this.  Thanks in advance.

Juancho.
U35334@UICVM.UIC.EDU

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

From: vmuhlbai@motown.ge.com (Vernon J. Muhlbaier)
Subject: Ncurses and BackTab
Date: 18 Mar 1994 22:53:40 GMT
Reply-To: vmuhlbai@motown.ge.com

I am using ncurses-1.8.1 on my Linux machine at home.  I obtained this
version from the Slackware 1.1.2 distribution.  Previously, I had
used an earlier version that I had downloaded from sunsite.unc.edu and
compiled.  I don't remember this version.

Anyway, I have two problems, both of which I have been able to work
around.

The first is that 'kich1' is not defined in the terminfo file for
console.  I was able to add this, and it worked fine.

The second problem is not quite so simple.  How to I get the shift Tab
to respresent a BackTab?  I see references to KEY_BTAB in
/usr/include/ncurses.h and 'kcbt' in the man page of terminfo.
I looked into the keytables definition in /usr/lib/kbd/keytables and
saw that both the shifted and unshifted characters for scan code 15
are set to 'Tab'.  My workaround was to re-define the shift of scan
code 15 to be 0x0b (the vertical tab) and in my c program, switch on `\v`.
Is there a more standard solution?

Vernon Muhlbaier
vmuhlbai@motown.ge.com


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

From: rob-n@clark.net (Rob Newberry)
Crossposted-To: comp.os.linux.development,comp.os.linux.help
Subject: tcpdump and SLIP
Date: 19 Mar 1994 01:03:06 GMT

Has anyone used tcpdump for SLIP interfaces under Linux?
I need to dump the output of my SLIP connection to
look at it.

Thanks for any help.

Rob Newberry
rob-n@clark.net


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

From: araw@iplab7.health.ufl.edu (Robert Moser)
Subject: Re: Linux pronounciation HOWTO
Date: 18 Mar 1994 23:44:05 GMT

In article <1994Mar18.180753.16769@cs.cornell.edu> mdw@cs.cornell.edu (Matt Welsh) writes:

   I have included these sounds on my Linux WWW page, which you can access
   with your favourite WWW client (such as Mosaic) at the URL:
           http://sunsite.unc.edu/mdw/linux.html

   Of course, you'll need to be able to play sound through your WWW client;
   Mosaic fires off as process called "showaudio" to do this. I have
   "showaudio" linked to /usr/local/bin/play on SunOS systems, which
   does the trick.

   mdw

Cool, might I suggest to Linus that he consider posting a picture of
himself, his home area, and the box "where it all took (is taking) place"?

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

From: kubla@klopfer.zdv.Uni-Mainz.DE (Dominik Kubla)
Subject: Re: PCI IDE is *not* just IDE on another bus...
Date: 15 Mar 1994 15:15:35 GMT

David Marples (dmarples@voyager.eee.strath.ac.uk) wrote:

: It seems to me that theres quite some performance there to be had if
: the appropriate drivers are built.  This post is intended to open up
: this subject for discussion so *please* don't blatently flame me
: *unless* I'm so far off the ball as to be on a different pitch.  If
: anyone has the 'specs for this transfer mode I'd appreciate a pointer
: so that I can look into the subject in a bit more detail.

If i remember correctly, then somebody started to rewrite the HD driver
just with this reasons. (And to unify the drivers for first and second
controller ...) But i haven't heard anything of it lately. Please check
a linux-activists KERNEL-Channel archive for the relevant mailing. The
message must be from January 94 ...

You might look at:

        FTP.Uni-Mainz.DE:/pub/Linux/archives/mailing-lists/KERNEL

Cheers,
  Dominik
+-------------------------------------------------------------------------+
| eMail: kubla@goofy.zdv.Uni-Mainz.DE                                     |
| sMail: Dominik Kubla, Lannerstra"se 53, 55270 Ober-Olm, F.R. of Germany |
+-------------------------------------------------------------------------+
DISCLAIMER:  Everything written above are the expressed thoughts of the
author and in no way connected to 'Johannes Gutenberg Universit"at', Mainz
(Germany). This way, they do not have to care about what I say ...

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

Subject: Re: FAQ: Cut & Paste from
From: rick.emerson@dscmail.com (Rick Emerson)
Date: Fri, 18 Mar 94 00:28:00 -0640

 @SUBJECT:Re: FAQ: Cut & Paste from vir                               N
DR> Message-ID: <CMrzLu.1Dp@cantua.canterbury.ac.nz>
DR> Newsgroup: comp.os.linux.misc
DR> From: drb@chem.canterbury.ac.nz (Ross Boswell)
DR> 
DR> Rick Emerson (rick.emerson@satalink.com) wrote:
DR> :  @SUBJECT:FAQ: Cut & Paste from virtual terminal                      N
DR> : I know the answer must be in a FAQ somewhere but darned if I can find
DR> : it!  How do I cut and paste from a virtual (*not* X!!!) terminal?
DR> 
DR> The kernel must have had selection configured at compile time.
DR> Then run selection from the /etc/rc.local
DR> man selection should help you sort it out.
DR> 

Works like a charm!  Thanks!

Rick  
...
 * ATP/Linux 1.42 * Survival - the race between education and catastrophe


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

From: mgrcls@cornflower (Christopher L Seawood)
Subject: Re: linux & thinkpad 750c (2.88 drive)
Date: 18 Mar 1994 23:23:22 GMT

Derek Chan (chan4@husc7.harvard.edu) wrote:
: Hi!  Has anyone as of yet gotten linux working _successfully_ w/ the IBM ThinkPad 750C?  If so, could you please email me or post?  Specifically, the 2.88 drivedoesn't like linux...Anyone as of yet found a patch?  (programmers: nudge, nudge^_^)

Quick fix: go into the BIOS and change the drive so that it's seen as a 1.44 instead of 2.88
Long-possibly drawn out fix: get the somewhat old floppy patches from tsx or sunsite, and modify them for 2.88 drives.

--
U said that U'd love me like a river
A river, U say, will never run dry
I'd rather hear U say 4 ever
Instead of a smile, I'd rather see U cry    --Prince, 1992

Christopher Seawood             seawoocl@nextwork.rose-hulman.edu

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

Crossposted-To: comp.unix.advocacy,biz.sco.general
From: bill@bilver.oau.org (Bill Vermillion)
Subject: Re: BRACE YOURSELF, was Re: Opinions wanted about SCO-unix (vs AIX/Linux).
Date: Fri, 18 Mar 1994 15:54:25 GMT

In article <TIM.94Mar17093839@cdin-1.compu.com>,
Tim Gallagher <tim@cdin-1.compu.com> wrote:
>Look out folks, this is flame material.  You've been warned.

>I love those folks who flock to the side of SCO any time their operating
>system is challenged.  I've been working with UNIX systems for years (SCO,
>AT&T SVR4, SunOS, AIX, and more).  I have never seen a company that takes
>outdated products that were given to them, and had the balls to turn around
>and resell them.  After all, XENIX was originally a Microsoft/IBM product (I
>never really learned exactly which).

Microsoft is the owner/originator of Xenix.  That was at a time when
you could only call your product Unix if it was the actual un-modifed
AT&T code.

Xenix was licsened to Altos, IBM and Tandy - there may be others.

The first IBM 1.0 was horrible.  The second version from IBM 2.0 was
better but had more bugs than most other Unix/Xenix implementations
than I have seend.

Tandy's version was for the Radio Shack model 16 and progressed through
several variants ending with 1.3.5 (or 1.3.7).

>The product was essentially dumped to a
>fledgeling Microsoft affiliate known as the Santa Cruz Operation.

Microsoft bought stock in SCO many YEARS after SCO came on the market.
SCO was never an affiliate of Microsoft.  Originally Microsoft thought
that Unix was going to be a winner.  That was before IBM came to them
and PC-DOS was born.

SCO did the work on the second version of Tandy's Xenix, the 3.x
series.

Just wanted to set some of the history straight there.

>  I personally have sent them
>bug report after bug report.  Going from company to company, I know if there's
>anything I can rely upon from SCO, it's that their bugs remain consistent, and
>that with each future release of the operating system, I can count on them to
>release new ones. 

That is not just an SCO problem.  I've had that from other Unix
vendors.   AT&T was probably the least responsive of the lot.
I've had two instances where the companies went bankrupt or were sold
and that made support non-existant.

Talk to people who used Unix from Microport, Intel, Bell Technologies,
Interactive, Esix, Dell, ... - and see what their reactions were when
the companies 1) went bankrupt, 2) sold the product to another vendor,
3) dropped support, or 4) just quit the market.

In defense of SCO, it was in business before all of the others started
shipping Unix product.  It is still in business after some of the above
went away.   Microport came back, and Esix was bought.   The path for
Interactive, through Kodak to Sun was tortuous to say the least.

If I remember correct Bell became Intel, which then went to Interactive
too.    I think I need a scorecard about now.

>If I had my druthers, I'd use AIX.  IBM has come full circle and cleaned up
>their act.  They *finally* understand that open systems is where the market
>is.

AIX has some interesting ideas.  Some are very good. Some I personally
think are/were based on an outdated look at technology.   What about
the IBM Xenix customers who were abandoned when IBM dropped it?

One of those is putting the directories in the middle of the disk -
like some floppy based OS'es did years ago.  It made sense then - to
reduce the seek time to the directories.   It also made sense in the
days of stepper motor HD's.   But for fastest speed in today's
marketplace, particularly with ZBR type SCSI drives the fastest data
transfer is on the outer tracks.   Access time does not always mean
fastest overall performance - if you get to it fast but have to read it
slower - you don't always get what you expected.

AIX is pretty bloated.  But so are many Unices today.

So 10 years from now will it make any difference :-)


-- 
Bill Vermillion - bill@bilver.oau.org | bill.vermillion@oau.org

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


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