Sun-Spots Digest, v6n169
William LeFebvre
Sun-Spots-Request at RICE.EDU
Mon Aug 8 15:19:28 AEST 1988
SUN-SPOTS DIGEST Friday, 5 August 1988 Volume 6 : Issue 169
Today's Topics:
Re: pclans RFC (& sun's & appletalk & kinetics)
Re: NeWS Question
Re: file `which which` mystery solved
Re: Suntools startup bug/feature
New version of "psraster"
Followup on my previous bug report
script for checking file system fullness
A 'pick-proof' lockscreen
Information on 8MM Backup devices on Sun 3/280 Systems
Neurocomputing software/hardware for Sun 3's?
Format of a ".o" file?
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----------------------------------------------------------------------
Date: 27 Jul 88 03:09:44 GMT
From: stpstn!aad at ames.arc.nasa.gov (Anthony A. Datri)
Subject: Re: pclans RFC (& sun's & appletalk & kinetics)
In article <1179 at gazette.bcm.tmc.edu> sob at cortex.neuro.bcm.tmc.edu writes:
>on top of Novell and 3+ as well. If you are looking for a TCP/IP-based
>solution, only PC/NFS (of the ones you mentioned) will do. TOPS and Novell
>are both based on vendor-specific protocols. Novell has available a
>TCP/IP gateway that allows ftp and telnet (no SMTP, though). TOPS has
>a SUN implementation that allows a SUN to "bridge the gap", but it
>not a gateway.
Now, I haven't researched it fully yet, but the latest information I've
seen on TOPS from Sun claims that it "does" TCP/IP -- telnet, ftp, ...
from macintoshes to the sun, at least. Of course, it's possible that what
that really means is "co-exists and is bundled with" TCP/IP. After seeing
a couple of Novell networks, I'm less than impressed with them. We've got
one here that runs over "Gnet", which I've *never* heard of before. The
sun propaganda also said, I think, that if you have TOPS running on a Sun,
then remote TOPS's can get to files that the Sun has NFS mounted. I may
have mis-interpretted this, but if it's true, that's something that NFS
itself can't do.
I'm getting into this because we've got a dozen or so macintoshes and two
laserwriters, and I'm tired of plugging my terminal line into a mac every
time someone wants a file transferred, not to mention the two laserwriters
on the appletalk I'd love to print to from the suns. It seems obvious to
me that the hardware answer is a kinetics box, but there's a lot of
software out there. As I remember, the kinetics box comes with tcp/ip to
run in the box, and telnet and ftp programs for the macintosh. TOPS (not
to be confused with tops-20, sadly) and/or K-talk (?) seem to solve the
file-transfer and printing issues, but one thing i haven't seen yet is a
product that lets the macintoshes send real mail, ie., rfc822, to the suns
(and beyond).
Any advice?
--
Anthony A. Datri,SysAdmin,StepstoneCorporation,stpstn!aad
------------------------------
Date: Wed, 27 Jul 88 11:02:56 EDT
From: bob at allosaur.cis.ohio-state.edu (Bob Sutterfield)
Subject: Re: NeWS Question
Rerference: v6n148
ssc-vax!dmg at beaver.cs.washington.edu (David Geary) writes:
>...If I write a NeWS-based application, can I run the application on
>another Sun that does NOT have NeWS loaded on it?
Assuming (1) there are no licensing restrictions prohibiting you from
doing so, and (2) you also install the shared libraries that contain any
components that may live in those shared libraries, and (3) you have the
correct CPU type and enough memory on the target host to run the
application you've compiled, and (4) there's a working network between the
target client host and the machine on which your server is running, (and
I've probably forgotten a few other assumptions...),
Yes.
------
Bob Sutterfield, Department of Computer and Information Science
The Ohio State University; 2036 Neil Ave. Columbus OH USA 43210-1277
bob at cis.ohio-state.edu or ...!{att,pyramid,killer}!cis.ohio-state.edu!bob
------------------------------
Date: 27 Jul 88 10:48:02 GMT
From: Ian Phillipps <mcvax!camcon!igp at uunet.uu.net>
Subject: Re: file `which which` mystery solved
Reference: v6n145
mkhaw at teknowledge-vaxc.arpa (Mike Khaw) says:
> My .cshrc file contains conditionally defined aliases for cd, pushd and
> popd that write $cwd into the namestripe of shell/cmdtools...and
> `which which` returns this "invisible" string together with
> "/usr/ucb/which".
The following may be of interest. I set the csh prompt to write the name
stripe. This allows other aliases - see the one for "vi" - to rewrite the
namestripe, and also caters for use of "su" and "rlogin". [This assumes
that the su'ed user has a suitable .cshrc. The communal ones I use test
real vs. effective uid and call up real user's .cshrc]
Note the test of prompt - this is the core of the `which which` problem
above. The prompt string is set by the alias PR, which is set according
to the terminal in use. The vt320 one writes the path into the status
line.
# @(#).cshrc 1.9 for igp [Extract only]
if ($?prompt) then # only for interactive shells
set HOSTNAME=`hostname`
set HOST=`expr substr $HOSTNAME 1 3`
set prompt="$HOST%\! "
if ( $?TERM ) then
if ( $TERM =~ *sun* && "`tty`" !~ *console* ) then
# Sun console specifics: (note that tty == console only outside windows)
alias WH 'echo -n "]l\!:1\]L\!:2\"' # args in window header
alias C 'echo -n "[2t"' # close window
alias O 'echo -n "[1t"' # open window
alias Z 'echo -n "[8;\!:1;\!:2t"' # change window size
alias IC "echo -n ']I\!:1\'" # change icon
alias PR 'set prompt="]l${HOSTNAME}: $cwd [$user]\]L$cwd:t\${HOST}%\\! "'
alias vi '(IC /usr/include/images/textedit.icon;WH "vi \!*" "\!:1";/usr/ucb/vi \!*;IC '$TOOL_ICON')'
else
alias PR 'set prompt="${HOST}:${cwd} %\\! "'
# The monster quote is to allow quotes to survive two lots of stripping
# putting the whole prompt in "" doesn't help because "$" is always
# quoted.
if ($term =~ vt320*) alias PR 'set prompt='"'"'[2$~[1$}[7m[1;20H '"'"'${cwd}'"'"' [K[$}'"'"'${HOST}'"'"' %\\! '"'"''
endif
alias cd 'cd \!*;PR'
alias pd 'pushd \!*;PR'
alias popd 'popd \!*;PR'
PR
endif
endif
--
UUCP: ...!ukc!camcon!igp | Cambridge Consultants Ltd | Ian Phillipps
or: igp at camcon.uucp | Science Park, Milton Road |-----------------
Phone: +44 223 358855 | Cambridge CB4 4DW, England |
------------------------------
Date: 28 Jul 88 00:22:39 GMT
From: vern at sequoia.lbl.gov (Vern Paxson)
Subject: Re: Suntools startup bug/feature
Mark Brown wrote about a fairly baffling problem of starting up Suntools
and having it come only partially up, a second shelltool refusing to start
until the first had been exited. We have encountered a similar problem
where (seemingly sporadically) when invoking Suntools one of the start-up
tools will gobble CPU like crazy. As I recall, ps shows it to as not
being associated with a pty. After some poking around we found that the
problem is related to pty's not being properly exited when a user leaves
Suntools with some shells still active. If your users are in the habit of
leaving Suntools without first exiting each active shelltool or cmdtool, a
subsequent 'w' will often show "ghost" pty's still hanging around. These
are the culprits.
The quick solution is to do nested "rlogin localhost"'s until you have
worked your way through all the ghost pty's, then exit the rlogin's and
the pty's will go away, too. Depending on your configuration, an
alternative quick solution is rebooting.
The better solution is to get your users in the habit of exiting all of
their shells before exiting Suntools.
[[ It have been pointed out by others that the root of the problem is
incorrect permissions on the pty's. I suspect that what you describe is
the reason why those pty's got the wrong permissions. --wnl ]]
Vern
Vern Paxson vern at lbl-csam.arpa
Real Time Systems ucbvax!lbl-csam.arpa!vern
Lawrence Berkeley Laboratory (415) 486-6411
------------------------------
Date: Tue, 2 Aug 88 16:36:11 +0300
From: leonid at TAURUS.BITNET
Subject: New version of "psraster"
Some time ago I poster a rasterfile(5) to PostScript conversion program
called psraster. This is the second release of this program. Psraster may
be considered a Public Domain replacement for pssun for those who bought
TranScript directly from Addobe (and not Sun) On the other hand, Psraster
somewhat different from pssun in its options and PostScript format. Here
are some features of psraster:
- Correct colour to greyscale conversion (for 8-bit deep images).
- "Byte-Encoded" PostScript format to reduce communication overhead.
- Automated image positioning and scaling.
- Complete control over size and origin of the image to be printed.
- Number of images on the same page.
The program now is mucb more powerful then the previous release, and a few
bugs are fixed since then (it works with dumpregion now). It has been
tested on Sun-3 and Sun-4 under SunOS 3.X.
The program makes an attepmpt to make an output that can ge used by
ditroff and/or LaTeX and be included in a document (byu computing and
outputing the BoundingBox). I have not got here the capability to include
PostScript in a document, so there are probably many fixes in that area.
Primarily the format of the comments. Please be so kind to describe the
exact format for these comments in the output file, so the next version be
useful in that sence too.
Leonid
[[ The shar file contains uuencoded files for the source. Running the
shar file through the Bourne shell will uudecode the files for you
automatically, but it also explicitly sets the path. So make sure that
either the current directory is writable by uucp or the installed version
of uudecode is not setuid (I have a separate copy of uudeocde in my bin
directory that has the setuid bit off, but this shar file still didn't
work at first). It replaces the old version, stored under "sun-source" as
"psraster.shar". It is 26038 bytes long. It can be retrieved via
anonymous FTP from the host "titan.rice.edu" or via the archive server.
For more information about the archive server, send a mail message
containing the word "help" to the address "archive-server at rice.edu".
--wnl ]]
------------------------------
Date: Tue, 26 Jul 88 18:17:56 CDT
From: root at emx.utexas.edu (Head UNIX Hacquer)
Subject: Followup on my previous bug report
The problem seems to be with the casting of objects of type float to type
'double' to be passed as a subroutine parameter. Things of 'float' should
be converted to type 'double' before being stuffed into the 'o' registers
for the subroutine call.
-Clyde Hoover
------------------------------
Date: Wed, 27 Jul 88 09:26:14 PDT
From: celeste at coherent.com (Celeste C. Stokely)
Subject: script for checking file system fullness
This script tells me if a filesystem has gotten close to full without my
noticing it. (We sysadmin types need to be aware of these sorts of things
when the favorite pasttime of our users seems to be dumping core!)
I have cron run this script and mail the output to me every night.
The way this is set (with "@ high=80") it squawks about filesystems more
than 80% full. If your threshhold of pain is lower, set "high" to a lower
number. Fill in the name of your filesystems on the "foreach" line.
The script:
#!/bin/csh -f
echo "On `hostname`:"
@ high=80
foreach fs (/ /pub /usr1 /big /home /usr/local /usr/news /usr)
set df_out=`df $fs | tail -1 ` #get filesystem's df numbers into df_out
#
#awk's NF is the number of fields on a line
#
@ percent=`echo $df_out | awk '{print $(NF-1)}' | sed 's/%//'`
@ remain=`echo $df_out | awk '{print $(NF-2)}'`
if ($percent > $high) then
echo "$fs is $percent% full with $remain kbytes remaining"
endif
end
The output:
On big_sun:
/usr1 is 84% full with 72301 kbytes remaining
/usr/local is 88% full with 22682 kbytes remaining
/usr is 91% full with 6635 kbytes remaining
Hope this helps someone,
..Celeste Stokely (a.k.a. Madame Server)
Coherent Thought Inc.
UUCP: ...!{ames,sun,uunet}!coherent!celeste Domain: celeste at coherent.com
Internet: coherent!celeste at ames.arpa or ... at sun.com or ... at uunet.uu.net
VOX: 415-493-8805
SNAIL:3350 W. Bayshore Rd. #205, Palo Alto CA 94303
------------------------------
Date: Wed, 27 Jul 88 23:39:56 PDT
From: Paul O'Neill <pvo at oce.orst.edu>
Subject: A 'pick-proof' lockscreen
>There is a security hole in "lockscreen", thus:
>If the control sequence for open window, "^[[1t", is sent to a shelltool
>or cmdtool window which is behind a lockscreen, it pops to the front and ...
Lockscreen runs 2 processes. "Lockscreen" clears the screen, does the
password verification and spawns "lockscreen_default" (usually the LIFE
program) for pretty pictures. The security hole is in lockscreen_default,
not lockscreen. If lockscreen_default can't be found in your path then
lockscreen does a bouncing sun logo that repaints the entire screen every
second; "^[[1t" will pop open a shelltool or commandtool, but it's only
accessible for less than a second. Either get rid of lockscreen_default or
explicitly tell lockscreen not to run a pretty-picture program by typing
the command: lockscreen "". It can't be picked by this technique. Put
lockscreen "" in your .rootmenu also.
Paul O'Neill pvo at oce.orst.edu
Coastal Imaging Lab
OSU/Oceanography
Corvallis, OR 97331 503-754-3251
------------------------------
Date: Wed, 27 Jul 88 10:56:30 edt
From: panda!jrb at talcott.harvard.edu (John R. Burke)
Subject: Information on 8MM Backup devices on Sun 3/280 Systems
I am looking for information from anybody that has used or seen an 8mm
backup device on Sun 3/280 systems. We are looking to put one on our
engineering file server.
Any responses would be appreciated.
I saw a reference to 8MM devices available from Sun 3 weeks ago, but when
I called my Sun sales person, he denied any knowledge of such a device.
------------------------------
Date: Thu, 28 Jul 88 11:24:16 EDT
From: Allen Wilkinson <urt at nav.icst.nbs.gov>
Subject: Neurocomputing software/hardware for Sun 3's?
I am not a reader of this news group so if you can help me with my problem
please mail your responses to the address below.
I am in need of information about neurocomputing software and hardware for
a SUN 3. Any information would be greatly appreciated.
Thanks in advance,
R. Allen "Urt" Wilkinson
National Bureau of Standards
Bldg 225 Room A216
Gaithersburg, MD 20899
ARPA: urt at icst-cmr.arpa
DOMAIN: urt at cmr.icst.nbs.gov
------------------------------
Date: Thu, 28 Jul 88 03:12:44 EDT
From: ghoti at bourbaki.mit.edu
Subject: Format of a ".o" file?
I would like to be able to look at .o files on a SUN3 and figure out how
they are put together. For example, I extracted the file printf.o from the
library /lib/libc.a and now I would like to see how it works. I can look
at the file using the command "od -bc" but how is the file formatted ?
One reason I am posting this on SUN-SPOTS is that I don't assume that the
answer would be the same on other UNIX systems or even on other SUNs.
Please reply to me directly since I don't subscribe to this newsgroup.
Thanks.
Allan Adler
ghoti at cauchy.mit.edu
[[ Look at the documentation for "a.out" format. Not that that will help
much (it's not very descriptive), but all executables and object files are
in "a.out" format. Look at the manual page in section 5 called "a.out"
--wnl ]]
------------------------------
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