Subject: Linux-Development Digest #728
From: Digestifier <Linux-Development-Request@senator-bedfellow.MIT.EDU>
To: Linux-Development@senator-bedfellow.MIT.EDU
Reply-To: Linux-Development@senator-bedfellow.MIT.EDU
Date:     Tue, 17 May 94 19:13:25 EDT

Linux-Development Digest #728, Volume #1         Tue, 17 May 94 19:13:25 EDT

Contents:
  Re: Two suggestions that might speed up Linux. (Klaus Frank)
  Anybody working on BSD dump porting? (Gioacchino La_vecchia)
  Re: [Request]: Dump program! (Barry Lynam)
  Re: Scanman driver for Linux ??? What about ScanMan 256? (Steven M. Palm)
  Re: LAT support? (Rob Janssen)
  Re: Socketvar.h (Rob Janssen)
  Re: COMMODORE CALLS IT QUITS (Ricardo Guimaraes)
  Re: Kernel 1.0.x: NET-2Debugged or NET-2E or ... ? (Alan Cox)
  Re: 1.0.9 kernel bug (+ partial fix): when using non-loopback address to send to localhost, "from" address should also be non-loopback. (Alan Cox)
  Re: Appletalk support? (Alan Cox)
  Re: 1.0.9 kernel bug (+ partial fix): when using non-loopback address to send to localhost, "from" address should also be non-loopback. (Alan Cox)
  Re: tcpdump: how to make a socket only look at one ethernet card (Alan Cox)
  ncurses weirdness (C. van Rij)
  [Q] 48+ TTY'S? I want more users. (I am being repressed.)
  Correction: ... DPMS monitors... (Christoph Rimek)
  Re: Terminator-Power Question (Harald Milz)
  keep old versions (Supanee Faarungsang)
  Re: [Request]: Dump program! (Andrea Dell'Amico)

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

From: klausf@toklotum.informatik.rwth-aachen.de (Klaus Frank)
Subject: Re: Two suggestions that might speed up Linux.
Date: 17 May 94 12:41:46 GMT

wos@dcs.warwick.ac.uk (William O Smith) writes:

>Suggestion 1:  Compressed buffers.  On fast machines, if there is idle
>          time, and spare buffer space, how about compressing the
...swap-partition...

If you feel strange, you could start compressing those swap-pages which 
consist of 95% zeros (just browse your swap-partition with bpe). You
could use a simple run-length encoding scheme to start experiments.

>Just ideas.  Please explain why they won't work.  Ta.

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

From: gio@di.unipi.it (Gioacchino La_vecchia)
Crossposted-To: comp.os.linux.help
Subject: Anybody working on BSD dump porting?
Date: 17 May 1994 12:28:02 GMT


I'm trying to port bsd dump to linux.
Many header files have not corrispondence on linux systems.

Nobody working on it?


                                        gio

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

Crossposted-To: comp.os.linux.help,comp.os.linux.misc,comp.os.linux.admin
From: lynam@qut.edu.au (Barry Lynam)
Subject: Re: [Request]: Dump program!
Reply-To: B.Lynam@qut.edu.au
Date: Mon, 16 May 94 23:19:37 GMT

Hi,

In article <2r7dj8$cqd@serra.unipi.it>, gio@cli.di.unipi.it (Gioacchino
La_vecchia) writes:
|>      Is there any program for dump in Linux environment?
|>      I looked for dump or rdump but I cannot found anything

If it is a remote backup in particular that you are looking for, tar can do
that something like tar -cvf machine:\dev\tape_device uses the same facility as
rdump.


Hope this helps someone.

Barry



+------------------------------------------------------------------+
| Barry Lynam                           EMail:  B.Lynam@qut.edu.au |
| Communications - Network Services     Phone:  +61 7 864 2883     |
| Computing Services                    Fax:    +61 7 864 1343     |
| Queensland University of Technology   Postal: GPO Box 2434       |
| Brisbane AUSTRALIA                            Brisbane 4001      |
|                                               AUSTRALIA          |
|--"I may not agree with your argument, but I'll defend your ------|
+---right to express it"-------------------------------------------+


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

From: smp@agape.sol.net (Steven M. Palm)
Subject: Re: Scanman driver for Linux ??? What about ScanMan 256?
Date: Mon, 16 May 94 21:13:12 GMT

In article <1994May16.133324.4267@imag.fr> vermeer@imag.imag.fr writes:
>
>Hi, I saw that German folks made a driver for Scanman-32.
>How about Scanman 256 ? Mine is a Scanman 256 in greyscale.

 Haven't seen that file anywhere on sunsite or tsx-11.  At least
 not anywhere I looked.  Pointers, anyone?


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

From: rob@pe1chl.ampr.org (Rob Janssen)
Subject: Re: LAT support?
Reply-To: pe1chl@rabo.nl
Date: Tue, 17 May 1994 11:30:00 GMT

In <2r9htl$n85@galaxy.ucr.edu> insom@galaxy.ucr.edu (chris ulrich) writes:

>I have some old LAT based dec(obviously) terminal servers that
>I would like to connect to a linux box.  Is there any LAT support
>in linux?  Is there enough to run terminal servers?

Last time this was discussed the understanding was that LAT support
requires a license from DEC.
So, there is no support for LAT in Linux.

Rob
-- 
=========================================================================
| Rob Janssen                | AMPRnet:   rob@pe1chl.ampr.org           |
| e-mail: pe1chl@rabo.nl     | AX.25 BBS: PE1CHL@PI8UTR.#UTR.NLD.EU     |
=========================================================================

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

From: rob@pe1chl.ampr.org (Rob Janssen)
Subject: Re: Socketvar.h
Reply-To: pe1chl@rabo.nl
Date: Tue, 17 May 1994 11:31:34 GMT

In <1994May16.221438.12089@kcvax1> oursler@kenyon.edu (Miles) writes:

>Hullo,

>       Forgive me if this is obvious, but why don't
>       I have a sys/socketvar.h in my include files?

It is not part of the Linux library distribution.

>       I went to compile some source and then realized
>       it was missing.  Did I forget something?

Probably it was not source that was ported to Linux?

Rob
-- 
=========================================================================
| Rob Janssen                | AMPRnet:   rob@pe1chl.ampr.org           |
| e-mail: pe1chl@rabo.nl     | AX.25 BBS: PE1CHL@PI8UTR.#UTR.NLD.EU     |
=========================================================================

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

From: guimar@pegasus.montclair.edu (Ricardo Guimaraes)
Crossposted-To: comp.os.linux.misc
Subject: Re: COMMODORE CALLS IT QUITS
Date: 17 May 94 06:53:05 GMT

bsa@kf8nh.wariat.org (Brandon S. Allbery) writes:

>In article <1994May12.192514.12009@rosevax.rosemount.com>, grante@reddwarf.rosemount.com (Grant Edwards) says:
>+---------------
>| : 65C816, but that was an 8/16 bit microprocessor.  (The Apple IIGS
>| 
>| Yep, that's the one -- I mis-remembered the bus width.  Did the IIGS
>| even run the thing in 16 bit mode?
>+------------->8

>If I remember correctly, one of the reaons the IIGS didn't take off was
>problems running 8-bit Apple II software.  I would suspect that means "yes".

The reason the IIGS didn't take off was because it was used as a cash cow to
finance the Mac. After a while, Apple just stopped all advertising. Few
8-bit programs had trouble running on the IIGS (mostly ones with oddball
copy protection). There are tons of 16-bit programs for it. There is a
Unix-like OS for it called GNO. 

BTW, the SNES runs on a 65C816.

-Ricardo

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

From: iiitac@uk.ac.swan.pyr (Alan Cox)
Subject: Re: Kernel 1.0.x: NET-2Debugged or NET-2E or ... ?
Date: Tue, 17 May 1994 12:11:21 GMT

In article <2r8bt4Emeo@uni-erlangen.de> anhaeupl@late.e-technik.uni-erlangen.de (Bernd Anhaeupl) writes:
>
>              The connection for the first rlogin is esteblished immediately,
>              but the second one needs some time  to succeed. When I abort 
>             the second rlogin with SIGINT (^C) a third rlogin succeds 
>             immeditately again.

This is all related to a kernel problem that is now fixed in 1.1.12
(Say thanks to Matt Dillon). I would however recommend caution in
choosing to upgrade to 1.1.12 unless you dont mind being on the
sharp end of kernel 'oddities'. 

Alan


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

From: iiitac@uk.ac.swan.pyr (Alan Cox)
Subject: Re: 1.0.9 kernel bug (+ partial fix): when using non-loopback address to send to localhost, "from" address should also be non-loopback.
Date: Tue, 17 May 1994 12:13:39 GMT

In article <1994May16.200502.19302@kf8nh.wariat.org> bsa@kf8nh.wariat.org (Brandon S. Allbery) writes:
>In article <1994May16.162353.23512@uk.ac.swan.pyr>, iiitac@uk.ac.swan.pyr (Alan Cox) says:
>+---------------
>| I didn't say upgrade to 1.1.8 - I said fixed as of 1.1.8. I know the difference
>+------------->8
>
>But that says nothing about the "stability" releases...
>
Which are stable because they don't get all of these little changes added
in. For 99.9% of applications this bug didn't matter and it doesnt
cause crashes or trouble. Fixing it in 1.0.x would not be a good idea.

Alan



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

From: iiitac@uk.ac.swan.pyr (Alan Cox)
Subject: Re: Appletalk support?
Date: Tue, 17 May 1994 12:21:22 GMT

In article <Cpx0Do.K2v@stortek.com> andre@hoth.stortek.com (Jeff Andre) writes:
>I've always been interested in doing this project.  Besides the "plenty
>of time" aspect, you need to program to the AppleTalk card.  I have both
>an old TOPS PC card and a (more?) current DL2000 from Dayna.  In order
>to support you'd have to get the vendors to release the specs for the
>cards in order to write the drivers.  They may, I don't know, haven't
>asked.
Drivers is an area I can't really help with - some vendors are wonderful
with information (3com for one) others don't give you any at all. 
Often you get almost insufficient info. You might want to see if there
is a packet driver for either of these cards in Russ Nelson's collection.

>One of the real questions is how much of an interest is there in such
>a capability.  Beyond sharing printers, AppleTalk isn't a steller performer.
My interest is purely abstract rather than having a use for it.

>I believe there is a way to attach Ethernet to old Macs; I believe there
>are SCSI devices.  If you're interested, I'll find the product.  I think
>we may have one or two here at work.

If you can add ethernet you can use an Appletalk/IP gateway and CAP60
(columbia appletalk). This doesn't yet support ethertalk although
the bits needed to add this exist (the Berkeley Packet Filter port
is part of tcpdump).

Alan

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

From: iiitac@uk.ac.swan.pyr (Alan Cox)
Subject: Re: 1.0.9 kernel bug (+ partial fix): when using non-loopback address to send to localhost, "from" address should also be non-loopback.
Date: Tue, 17 May 1994 12:29:35 GMT

In article <1994May17.003827.14965@emc.rvt.com> remco@emc.rvt.com writes:
>What the heck is a "stable version with a bug"? An oxymoron?

It has something that doesn't work, but it doesn't crash the machine.
Most programs can be described this way - bash for example has a few
bugs but doesn't fall down dead.

>If 1.0 has known bugs and they were not to be fixed, then to hell with it.
>Just delete it from the ftp servers and force everybody to paricipate in
>debugging the 'real' kernel. Anything else would at least be misleading.
>No different from using 99.13 when 99.15 was out (well, worse!).

No the point of the matter is that 1.0.x is a solid kernel, it should
stay up and it can be used in a production environment. It's not perfect
and with extra features. At the moment I've got no solid bug reports with
1.0.9 that are viably fixable without almost certainly damaging the stability
of the code. 1.1.12 has all the current fixes (barring the 200K of patches
I have pending for 1.1.13) - and does have some quite real bugs along with
all the new features.

Hopefully that clarifies things a bit better

Alan

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

Crossposted-To: comp.os.linux.misc
From: iiitac@uk.ac.swan.pyr (Alan Cox)
Subject: Re: tcpdump: how to make a socket only look at one ethernet card
Date: Tue, 17 May 1994 12:33:21 GMT

In article <2r8l4e$4p5@canoe.gandalf.ca> pt@gandalf.ca (Paul Tomblin) writes:
>Does anybody have any suggestions on how to make socket() only hear packets
>on one ethernet device?

You can't. But if you use recvfrom() to receive the packets on the 
SOCK_PACKET socket you can look at the sockaddr structure of the address
and get sa_family=device_type (ARPHRD_ETHER etc) and sa_data is the
device name, so you can strcmp() on it.

PS: Your email address is broken.



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

From: cvrij@cs.vu.nl (C. van Rij)
Subject: ncurses weirdness
Date: Tue, 17 May 1994 13:10:40 GMT

I tried to port some MS-DOS apps. (using a lot of low-level tricks)
to Linux using ncurses; This offers enough video/keyboard functions,
but.. it doesn't quite seem to work! (Ok, i might be missing something)
The idea is: creating 2 windows (w1= newwin(0,0,0,0), same for w2), 
filling these (wprintw(w1,"%s",string), same for w2), and putting 
the first on screen (wrefresh(w1)), and after a keystroke, switching
to w2 (wrefresh(w2)). The first problem occurs with putting w2 on screen:
the second line from w1 remains on screen! (Also after clear())
Another problem occurs when going back to w1: it's blank!
Am I missing something obvious?
(I hope this is the place to ask, c.o.l.help didn't seem appropriate)
I tried this with ncurses 1.8.1 and 1.8.5, by the way.

Cheers,
Casey Ryder

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

From: crfisher@nyx10.cs.du.edu (I am being repressed.)
Subject: [Q] 48+ TTY'S? I want more users.
Date: 17 May 1994 08:54:59 -0600

Ok I have now got my linux machine to allow up to 48 users. I want more.

How do I go about doing it? I have seemingly run out of ttyxx's to use and
almost out of minor device numbers.

-- 
White man spelled backwards is pork - CB4

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

Date: 16 May 1994 23:57:00 +0100
From: chrimek@rimki.toppoint.de (Christoph Rimek)
Subject: Correction: ... DPMS monitors...
Reply-To: chrimek@tpki.toppoint.de

Hello

Yesterday I posted the diff-outputs for some additions for the support
of the DPMS monitors. Christof Junge (chris@cj.in-berlin.de) made me
aware that there was a small mistake in the config.in-diff:
I cutted too short, there were 3 lines at the end that did not find their
way to the net, although the header stated 4 original lines to be replaced
by 21 new lines. Now here is the diff again - this time complete.

========================================================cut=============
--- config.in.orig      Mon May  9 17:16:34 1994
+++ config.in   Sun May 15 14:17:41 1994
@@ -116,4 +116,21 @@
 bool 'ATIXL busmouse support' CONFIG_ATIXL_BUSMOUSE n
 bool 'Selection (cut and paste for virtual consoles)' CONFIG_SELECTION y
+:
+:  The following item should only be set to YES (y) if your monitor knows
+:  the VESA Power Saving Protocol and if you have an EGA/VGA card (other
+:  video adapters are untested, but should work too).
+:  ATTENTION: setting this to YES when not appropriate can destroy your
+:             monitor and/or video adapter card !
+:
+bool 'VESA Power Saving Protocol Monitor support' CONFIG_VESA_PSPM n
+if [ "$CONFIG_VESA_PSPM" = "y" ]
+:
+: Some VESA PSP Monitors have a local timer and switch to Power_Off state
+: after a defined period (e.g. 5 minutes) in Standby mode. If your monitor
+: does not have such a timer or if you want to force your monitor to directly
+: go to Power_Off_State, set the following variable to YES (y).
+:
+bool 'Force OFF signal to be sent to VESA PSP Monitor' CONFIG_PSPM_FORCE_OFF y
+fi
 bool 'QIC-02 tape support' CONFIG_TAPE_QIC02 n
 bool 'QIC-117 tape support' CONFIG_FTAPE n
========================================================cut=============

-cr

--
Christoph Rimek, Kiel, Germany  (+49 431 18307)      chrimek@toppoint.de

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

From: hm@seneca.ix.de (Harald Milz)
Subject: Re: Terminator-Power Question
Date: Mon, 16 May 1994 19:02:41 GMT
Reply-To: hm@seneca.ix.de

Rob Janssen (rob@pe1chl.ampr.org) wrote:

: > Interfered in what way?
: > Did the tape drive short-circuit the terminator power?

: > (if it is not that, I really cannot imagine how supplying terminator
: > power can interfere with anything)

No? Imagine you connect two external devices with TERMPWR enabled. You never
ever get equal voltages from both, resulting in a high current flowing
from the higher voltage source to the lower. There is normally no current
limitation with TERMPWR terminals except for a blow-fuse. I once blew the
1.5A fuse on my AHA1542B when connecting an external Viper 150S with TERMPWR
enabled. If this does not happen, it's mere coincidence. This does not 
interfere with the signal lines, however. In most cases (where blow fuses 
are supplied), you'll probably never notice it until you must rely on the
TERMPWR of the blown device.

Ciao,
hm


-- 
Harald Milz (hm@seneca.ix.de)

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

From: supat@ux2.cso.uiuc.edu (Supanee Faarungsang)
Subject: keep old versions
Date: 17 May 1994 13:38:06 GMT

Hi,

    I found that for several softwares old version are better.
eg xv2.21 show pictures better than 3.00a
   XFree2.0 has no problem on font while 2.1 and 2.1.1 has problem
   Ghostview 1.4.1 has no problem while 1.5 has color problem and not work

now I keep old versions as much as possible but I have not much space
I keep gcc 2.4.5 which I believe better than 2.5.8

If it possible please keep old version at all linux sites.

Thanks,
supat

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

From: adellam@apollo.di.unipi.it (Andrea Dell'Amico)
Crossposted-To: comp.os.linux.help,comp.os.linux.misc,comp.os.linux.admin
Subject: Re: [Request]: Dump program!
Date: 17 May 1994 15:22:48 GMT

In article <RON.94May16135700@draconia.hacktic.nl> ron@draconia.hacktic.nl (Ron Smits) writes:


   In article <1994May16.094342.13185@imec.be> buytaert@imec.be (Steven Buytaert) writes:

      Gioacchino La_vecchia (gio@cli.di.unipi.it) wrote:
      :         Is there any program for dump in Linux environment?

        Gio,

        Check out 'man od' and its options. Maybe that can
        help you out... 
        An 'apropos dump' could also get you started...

        --Stef

      --
      Steven Buytaert 

      WORK buytaert@imec.be
      HOME buytaert@innet.be

              'Imagination is more important then knowledge.'
                              (A. Einstein)


   I think he means the BSD dump and rdump programs for making backups.
   If this is what he means he might check out tbackup and afio



Excuse me, I'm working with Gio and I can explain the problem in detail.

We are searching a program like BSD dump or rdump, to backup our linux
PC with a backup program named amanda. It can use dump/rdump, or GNU
tar. It runs on an HP 9000 ( where the tape is attacched ) and it
backups all the workstations of the Departments of Computer Science of
Pisa; the workstations have dump/rdump, and amanda can use only a
backup program, so we need dump/rdump.


   --



                   Ron Smits
                   ron@draconia.hacktic.nl
                   Ron.Smits@Netherlands.NCR.COM

   /*-( My opinions are my opinions, My boss's opinions are his opinions )-*/
   /*-(                They might not be the same                        )-*/


Thanks all for the help,
andrea

--
                             _\\|//_ 
                             ( O-O )
==========================o00==(_)==00o===============================

                          Andrea Dell'Amico
                  e-mail: adellam@di.unipi.it
                          andrea@virgilio.di.unipi.it
                               student

  Universita' di Pisa, Corso di Laurea in Scienze dell'Informazione

=====================================================================


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