NetNews Usenet Archive 1992 #19/NN_1992_19.iso/spool/comp/unix/question/10538

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From:       The Moderator (Mike Muuss) <[e-mail]>
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Subject:    INFO-UNIX Digest  V15#134
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INFO-UNIX Digest          Sat, 29 Aug 1992              V15#134

Today's Topics:
   Re: Strange side effects caused by calling sh functions with args.
                          Re: reliable write()
                        Non-blocking I/O in UNIX
        Sockets: Non Blocking I/O, How do I know when its done?
                           vt100 escape codes
                          How to stty cbreak ?
                       Socket and File Descriptor
              Overwriting a file from 2nd fortran program
             Re: Multitudinous Problems With NU-TPU and ^Z
                    How to prevent a large core-dump
                  Re: How to prevent a large core-dump
                         Zmodem upload problem
    Re: How do i find out the address of the addtional ehternet card
                     SPSS for unix, does it exist??
      Re: I want a program that prints out base gid's of any user
 How can I allow access to a subdirectory without risking other files?
Re: How can I allow access to a subdirectory without risking other files?
                     Where can I find 802.3 specs?
                          UNIX Wingz and MacX
                           Re: Login Message
                   cursor input on curses (new prob.)
                 Re: cursor input on curses (new prob.)
               How do I compile the BSD Telnet by itself?
                 What is the format of a mailbox file?
                                 Thansk
    Re: how come : ! out of vi always uses sh instead of $SHELL ???
                           Re: logout message
                 Conventions for file name "extensions"
                             AWK Iteration
     Need all the details to convert a PC to a UNIX box/X terminal
   net.views -- USL/BSDI lawsuit -- a bonehead error -- PLEASE READ!
         How Can I Discover Alternate IP Addresses For Gateway?
       Re: How Can I Discover Alternate IP Addresses For Gateway?
                 Passing control to user in nawk script
                   Re: mail help: how to reject mail?
                    Re: Zmodem installation problem
                  Man page ---> postscript  .... help!
              NFS security flawed (was: Re: chown : HELP!)
                        A Novice^2 nawk question
-----------------------------------------------------------------


edu!andrew.cmu.edu!sm86+
From: [e-mail] (Stefan Monnier)
Newsgroups: comp.unix.questions
Subject: just some information
Message-ID: <[e-mail]>
Date: 25 Aug 92 14:36:52 GMT
To:       [e-mail]


Since a few weeks I have access to a DECstation 3100 instead of a
SPARCstation 2.

I'm surprised of the speed difference.

Here is the question: what is in my DEC ?
is it a MIPS R2000 or R3000 ? at what clock speed ?

That'all I'd like to know !

Stefan Monnier


 -----------------------------------------------------
-- On the average, people seem to be acting normal --
 -----------------------------------------------------

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

From: Elmar Knipp <[e-mail]>
Subject: Re: Strange side effects caused by calling sh functions with args.
Date: 10 Aug 92 20:15:47 GMT
To:       [e-mail]

[e-mail] (Stephen Riehm) writes:

>I am maintaining a rather large shell script, with many functions, and
>it appears that if a function is called with some arguments, then the
>arguments to that function become the arguments to the entire
>script. Is this the normal way that this should work? I have checked
>the following script, on the sun I get what I expect, but on the HP I
>don't. Which shell is right?? ( My reference manual only states:
>functions in shell scripts have access to $# $* and $1-9, it doesn't
>specify any side effects. The HP manpage doesn't even mention sh
>functions )

I had the same problem with "sh" on a HP9000/720 with HP-UX 8.07.
Use the korneshell "ksh" and it works ok.

Elmar

 --------------------------------+-------------------------------------
Elmar Knipp                     |     Voice:       + 49 231 975015-0
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 --------------------------------+-------------------------------------

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

From: Aakash Sahai <[e-mail]>
Subject: Re: reliable write()
Date: 11 Aug 92 21:11:02 GMT
To:       [e-mail]

> [e-mail] (Jeff Rosenfeld) writes:
>
> Is there a standard way to get the Unix filesystem to write a file in such
> a way that I can be assured that the data has made it to the disk?
>

The most standard way to do this is to use O_SYNC flag while opening the file
to write. This forces the kernel to do a wait on the buffer till the I/O is
done (i.e. till the time the disk driver marks the buffer as DONE and wakes up
the sleeping process). However, if the disk driver or the disk hardware is
doing some kind of buffering then you can never be sure if the data was written
to media or not.

> [e-mail] (Murray Nesbitt) writes
>
> You are probably aware of the fflush() system call, which will flush
> data buffered in user address space into the kernel.  Once in the
> kernel, however, you have no way of knowing when the write to disk
> will occur.
>
> Sorry.

Sorry, there is no system call called "fflush()", maybe you are referring to
the library call. You are right though, it does not guarantee that the data
will be written to the disk.

- Aakash

S.D.A.

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

From: Cengiz Erbas <[e-mail]>
Subject: Non-blocking I/O in UNIX
Keywords: I/O
Date: 12 Aug 92 18:11:26 GMT
Sender: News Admin <[e-mail]>
Nntp-Posting-Host: slump
To:       [e-mail]

I would like to read character input from the keyboard without requiring the user
to press the return key. But, I do not want to use the "curses" library.
Any help is appreciated. Please e-mail I am not a regular user of the USENET.

Thanks in advance.

Cengiz Erbas,
e-mail: [e-mail]

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

From: "Eric E. Johnson" <[e-mail]>
Subject: Sockets: Non Blocking I/O, How do I know when its done?
Date: 12 Aug 92 21:43:41 GMT
Sender: Net Noise owner <[e-mail]>
To:       [e-mail]

I've been working with sockets for a few months, and I've been
trying to do some non blocking sockets.  But, I don't know what to
"watch for" when the socket completes.

I turn the socket into a non blocking socket by the following command.

    fcntl(s,F_SETFL,FNDELAY);

When I use a

    result = read(s,buffer,nbytes);

The errno is indeed set to EWOULDBLOCK, but *how* do I check to see
when the data is in, or when the call is completed?  I tried a while
loop wrapped around the read, and watched errno to see if it became 0,
or result returned >0, neither of which happened.

Is there function call to make that returns the status of socket in
non blocking mode?

Thanks

Eric

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

From: Wilbur Y Kuo <[e-mail]>
Subject: vt100 escape codes
Date: 12 Aug 92 21:47:15 GMT
To:       [e-mail]

Hi.  I was wondering if anyone could e-mail me a list of the escape codes
that a vt100 terminal interprets, or tell me what I should man.  For
instance, what control code/escape code do I place in a file to cause the
cursor to go up a line when I display the file?

Please e-mail any responses.  I'll post a summary of the results.

Thanks in advance.

Wilbur

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

From: Zhuo Zang <[e-mail]>
Subject: How to stty cbreak ?
Keywords: terminal, tty,
Date: 13 Aug 92 00:07:28 GMT
Sender: Usenet Diskhog System <[e-mail]>
To:       [e-mail]

I tried :
>stty cbreak

but it doesn't seem work.

I can't tell whether the cbreak
mode is on or not.
(I used: stty all, stty -a.
nothing appropriate shows.)

Any help will be very much appreciated.

Thanks in advance!

zhuo

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

From: Hien Luu <[e-mail]>
Subject: Socket and File Descriptor
Date: 22 Aug 92 20:00:16 GMT
To:       [e-mail]

I was reading about sockets and learned that sockets are referenced by
file descriptors.  I assume this is the same file descriptors that comes
from the file descriptor table.  I also learned that each UNIX process
has 20 files descriptor at its disposals.  What happens if the a process
reaches the maximum number of allowed file descriptor?  Does the process
get killed by the operating system?

I would appreciate some more explanation the relationship between
the file descriptor and sockets.  Where does the number 20 come from and
is this a configurable number?

thanks in advance.

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

From: "G. Hugh Song" <[e-mail]>
Subject: Overwriting a file from 2nd fortran program
Date: 25 Aug 92 03:54:01 GMT
Sender: [e-mail]
Nntp-Posting-Host: ardour.bellcore.com
X-Newsreader: Tin 1.1 PL5
To:       [e-mail]

Hi,
What is the most decent behavior when a second fortran program attempts
to overwrite on a file which has been opened from another fortran program?
It looks like the second program just overwrites on such a file without any
OS message.   I tried to overwrite on a file, once, over the NFS network and
secondly, directly from the same machine.   In both cases, the file
was just overwritten.
Does this behavior the same on other operating systems---HPUX, AIX?

I am running Ultrix 4.0 on Dec 5000/200.

Thank you.

    Hugh

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

From: Michael Lemke <[e-mail]>
Subject: Re: Multitudinous Problems With NU-TPU and ^Z
Date: 25 Aug 92 05:20:05 GMT
To:       [e-mail]

In article <[e-mail]> [e-mail] (Tim Pierce) writes:
>Some background: we are running Ultrix 4.2 on a DECstation 5000/133.
>We have made a decision to move all of our news activities from a
>larger VMS system on-campus to a pair of DECstations.  Since this
>means acclimating several hundred previously-content VMS users to an
>unfamiliar Unix environment, we wish to provide them with TPU to use
>for their default editor if they wish.  We've acquired a package
>called NU-TPU which has worked pretty well so far.

I am surprised you say this.  My experience with it is rather bad.  The
new version 3 or something has other bugs than the previous.  I don't
want to mention them here.  I am only surprized that this stuff can
actually be sold.

>
>The problem is that TPU uses ^Z for the key to enter extended
>commands.  NU-TPU handles this perfectly well when you execute it from
>the shell, but when it is called by trn, for example, ^Z stops the job
>which is running TPU.  (Presumably trn is catching the ^Z signal.)
>

I experienced the same problem but gave up on it--actually never tried
to investigate.

[other stuff deleted]
>
>(Postscript: I'd be happy to use edt.el under GNU Emacs 18.58 if I
>could find one that wasn't so buggy.  Part of my mission for the
>remainder of August is to try to fix this, to see if it constitutes a
>plausible solution.)

This is actually why I respond to this: If you are happy to use emacs
there is a new tpu emulation package posted about a month ago or so.  It
is *no* tpu language emulation but just the edt keypad mode similar what
edt.el does.  The name of the package is tpu-edt.el written by Rob
Riepel ([e-mail]).  I don't know at what site it is archived
but you can just mail the author or I could send you a copy.

There should also an Ultrix version of TPU be available from DEC but
they want money of course.  If you are serious about it probably the way
to go.


--
Michael Lemke
Astronomy, UT Austin, Texas
([e-mail] or UTSPAN::UTADNX::IO::MICHAEL [SPAN])

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

From: Joel Andrew Huddleston <[e-mail]>
Subject: Re: Multitudinous Problems With NU-TPU and ^Z
Date: 25 Aug 92 21:51:15 GMT
Sender: Read News <[e-mail]>
To:       [e-mail]

In article <[e-mail]>, [e-mail] (Michael Lemke) writes:
|> In article <[e-mail]> [e-mail] (Tim Pierce) writes:
|> >Some background: we are running Ultrix 4.2 on a DECstation 5000/133.
|> >                                                 ... VMS users to an
|> >unfamiliar Unix environment, we wish to provide them with TPU ...
|> >   ... NU-TPU which has worked pretty well so far.
|>
|> I am surprised you say this.  My experience with it is rather bad.  The
|> ...
|> >
|> >The problem is that TPU uses ^Z for the key to enter extended
|> >commands....
|>
|> I experienced the same problem but gave up on it--actually never tried
|> to investigate.
|>
|> [other stuff deleted]
[other stuff deleted]

DECTPU is now on the CSLG program.  You both look like you are from
educational institutions, so I hope you are in the CSLG.  I installed it
just the other day and must tell you that I have nothing but good things
to say about it.

It solves the ^Z issue by changing the ^Z VMS convention to the ^D Ultrix
convention.  ^Z still acts as you expect in Ultrix, that is, it suspends
the process but ^D takes you to command mode or you can simply use the
<DO> key on a vt terminal.  Also included are the MOTIF (tm) and XUI (tm)
GUIs with menus etc.  Really a nice package.  Certainly the best text
editor I have used on a UNIX machine in terms of ease of use and learning
curves.  I could even use the old familiar "set keypad edt" to get keypad
on my DECstation to "do the right things."  I haven't gotten in to custom
section files yet, but that is the next step and it looks fairly trivial.

All in all, this is a great package.  As soon as I can retrain my fingers
not to think in vi, this will be my default editor.

--
Joel Huddleston  eka [e-mail]
Not responsible...  Not reliable... Your mileage may... Caveat E...

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

From: Adwin Soos <[e-mail]>
Subject: How to prevent a large core-dump
Date: 25 Aug 92 17:30:56 GMT
Sender: USENET News System <[e-mail]>
Originator: [e-mail]
To:       [e-mail]

Hello netters,

A few weeks or even months ago I have read some discussion about the problem
of preventing a core-dump. I remember that there were some suggestions on how
to prevent that a large core-dump will be made.
This problem is now occurring at our place where someone is writing a large
program and in some test-cases there is a core dump for more than 60 Mb.
This person is not using this core to debug it so maybe we can just stop the
creation of this core for this person.
Is there someone who can mail me such suggestions?

Thanks,
Adwin Soos

E-mail : [e-mail]    University of Twente,
                    Department of Applied Mathematics,
                    Enschede,
                    The Netherlands.

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

From: Stew Ellis <[e-mail]>
Subject: Re: How to prevent a large core-dump
Date: 29 Aug 92 15:23:01 GMT
Sender: "Mr. News" <[e-mail]>
To:       [e-mail]

[e-mail] (Geoff (cbird) Newton) writes:

>In <[e-mail]> [e-mail] (Aakash Sahai) writes:

>>In article <[e-mail]> [e-mail] (Adwin Soos) writes:
>>| A few weeks or even months ago I have read some discussion about the problem
>>| of preventing a core-dump.

>>Two simple solutions are -

>>(i)    Run the core-dumping program from a directory where the user does
>>    not have permission to create file.

>>(ii)    Set the Effective-User-ID of the program different from its
>>    Real-User-ID.

>Most systems have a ulimit command which allows you to set resource limits.

>bash has a builtin ulimit command, 'ulimit -c <num>' specifies the max size
>of a corefile. <num> == 0 means no coredumps.

>csh has a similar feature with its builtin 'limit' (limit coredumpsize <num>).

>gjn
>[e-mail]
>(-|


On SunOS, the core filesize if usually reported as being much larger than
the number of blocks it actually occupies.  The reason is that it does not
dump the dynamic libs with the image, but reports the amount of mem they
take up when the process is running.  Frequently they take up only 20K even
though they report 8M with ls -l.

Frequently it is not the size that is a problem, but rather the information
they may contain to the curious person with access to strings.  If you use
the limit command in the csh family, that does not impact a program that is
running suid root, and you can get a core that contains passwords or
something else sensitive written in a core that is mode 644.  What I have
done is 'ln /dev/null core' in some of the directories where cores have had
a nasty habit of showing up.  Does anybody know of any problem with this?

--
--                                                        ___________________
  R.Stewart(Stew) Ellis, Assoc.Prof., (Off)313-762-9765  /   _____  ______
  Humanities & Social Science,  GMI Eng.& Mgmt. Inst.   /        / /  /  / /
  Flint, MI 48504      [e-mail]              /________/ /  /  / /

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

From: Zhuo Zang <[e-mail]>
Subject: Zmodem upload problem
Date: 25 Aug 92 17:43:27 GMT
Sender: Usenet Diskhog System <[e-mail]>
To:       [e-mail]

Hello,
I installed the Zmodem on our DECstation running
Ultrix 4.2 . I use ProComm 2.4.2 on my PC .
The Zmodem contains Ymodem, so I use the Ymodem in
ProComm to transfer the files DECstation <-> PC .
I can download from the DECstation to PC, but I
can't upload from PC to DECstation .

I used:
>sb <file>
for download
>rb
for upload

The message I got is :bad packet .

I tried to debug the source program, the problem
looks like the crc checking problem  and also
the block number sent by the ProComm does not
match the one in Zmodem.

Does anyone have such experiences ?

The line setting I use in ProComm is 1200-N-8-1 .
My PC is an XT.

Possible problem:??
1. the ProComm sends 8-bit crc (actually I don't know
   what kind of crc the ProComm is using), while Zmodem uses 16-bit crc
   this will cause crc mismatching.
   But I use the Ymodem when I connect to BBS, without any
   problem .
2. the PC is 16-bit, while the Unix is 32-bit
   But why the downloading is alright?


Thanks in advance !

--zhuo

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

From: Barry Margolin <[e-mail]>
Subject: Re: How do i find out the address of the addtional ehternet card
Date: 25 Aug 92 18:35:00 GMT
NNTP-Posting-Host: telecaster.think.com
To:       [e-mail]

In article <[e-mail]> [e-mail] (Mingteh Michael Chen) writes:
>     Is there a way to find out the ethernet address of an additional
>ethernet card on my sun 4/60 on line?

Sun sets the addresses of all its ethernet interfaces to that of the first
one.
--
Barry Margolin
System Manager, Thinking Machines Corp.

[e-mail]          {uunet,harvard}!think!barmar

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

From: Cancholech <[e-mail]>
Subject: SPSS for unix, does it exist??
Date: 25 Aug 92 18:42:24 GMT
Sender: [e-mail]
Nntp-Posting-Host: lictor.acsu.buffalo.edu
To:       [e-mail]



Does anyone know if SPSS the stats program for PC's and VAX is
available for Unix systems?


--
"I have all my wisdom teeth, two up top and two beneath,
Aye, to recognise my mouth says things that aren't so wise.."
rutgers!ub!blackman [e-mail]

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

From: Larry Wall <[e-mail]>
Subject: Re: I want a program that prints out base gid's of any user
Date: 25 Aug 92 19:30:28 GMT
Sender: [e-mail]
Nntp-Posting-Host: scalpel.netlabs.com
To:       [e-mail]

In article <[e-mail]> [e-mail] (Benjamin Z. Goldsteen) writes:
:
:    I have been trying to write a program that prints out the
: base gid of a user (given on the command line).  I have tried
: using awk and perl, but I can not get anything decent.
: Can show me how to do this.  One thing I have tried
: [ gid username ]
: #! /usr/bin/awk -f
: BEGIN { FS=":"; FILENAME="/etc/passwd" }
: ARGV[1] == $1 {print $4}
:
: I am not sure if 1 if right for ARGV, but whatever...anyway, it
: won't read from /etc/passwd - it only reads from stdin.  I can;t
: make it do otherwise.

You can't make a sow's purse out of a silk ear.  Or something like that... :-)

: I don't really understand perl...

You don't have to Understand Perl(TM).  You only have to know enough
of it to get the job done.

The way to do this in Perl is to use the standard system routine for it:

    #!/usr/bin/perl -l
    print((getpwnam($ARGV[0]))[3], "\n");

or, more readably,

    #!/usr/bin/perl
    ($login,$passwd,$uid,$gid) = getpwnam($ARGV[0]);
    print "$gid\n";

This will even work on YP systems, er, that is, NIS system.

Now, if you *wanted* to parse /etc/passwd yourself in Perl, you'd probably
do it something like this:

    #!/usr/bin/perl
    open(PASSWD, "/etc/passwd") || die "Can't open /etc/passwd: $!\n";
    while (<PASSWD)) {
    ($login, $passwd, $uid, $gid, $gcos, $home, $shell) = split(/:/);
    print "$gid\n" if $login eq $ARGV[0];
    }

But ordinarily you should use the provided system calls.  It's probably
a mistake in the original design of Unix that system calls and shells were
kept so far apart from each other...

Have you ever read The Origin of Perl in the Breakdown of the Bicameral Unix?

:-)

Larry Wall
[e-mail]

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

From: I W Scott Barker <[e-mail]>
Subject: How can I allow access to a subdirectory without risking other files?
Date: 25 Aug 92 20:08:14 GMT
Sender: USENET News System <[e-mail]>
Nntp-Posting-Host: acs5.acs.ucalgary.ca
X-Newsreader: Tin 1.1 PL5
To:       [e-mail]

Does anyone know how I can allow access to all of the files I have in one of
my subdirectories, without risking someone damaging files in other
directories? The only method I know is to set the setuid bit for the
directory, but as far as I know, this will allow others to compile programs
in that directory and execute them as if they were me. I just want them to
be able to modify and add files in the directory, without being able to run
anything as me (it's ok if they run programs as themselves).

Does anyone have any ideas? (BTW, I have no way of creating a new user group,
so that option is out as well).

--
Scott Barker
[e-mail]

"Logic is the beginning of wisdom, not the end."
   - Spock, Star Trek VI: The Undiscovered Country

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

From: Leslie Mikesell <[e-mail]>
Subject: Re: How can I allow access to a subdirectory without risking other files?
Date: 29 Aug 92 02:08:05 GMT
To:       [e-mail]

In article <[e-mail]> [e-mail] writes:
>I know how to give group/other access to a subdirectory without risking my
>other files, however, I want people to be able to read/write to ANY file in
>the subdirectory. That includes files put there by other people.  The only way
>I know of to do this is to make sure that everyone has their umask set to 000
>when they are working in that subdirectory.

It sounds fairly dangerous to do this without any arbitration to keep
several people from writing to the same file at once.  Why don't you
just insist that each person copy a file before making changes?  Or
write a suid root program that does nothing but change the modes on
the files in that directory and make the users run that before writing
to any files.  Better yet, make the program also perform some kind of
file locking while each person is writing.

Les Mikesell
  [e-mail]

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

From: Ed Carp <[e-mail]>
Subject: Where can I find 802.3 specs?
Date: 25 Aug 92 23:55:54 GMT
X-Newsreader: Tin 1.1 PL5
To:       [e-mail]

Subject line says it all.  I've looked on uunet, and used archie... :(
--
Ed Carp, N7EKG     [e-mail]                801/538-0177
"This is the final task I will ever give you, and it  goes  on  forever.   Act
happy, feel happy, be happy, without a reason in the world. Then you can love,
and do what you will."           -- Dan Millman, "Way Of The Peaceful Warrior"

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

From: Tom Sheppard <[e-mail]>
Subject: UNIX Wingz and MacX
Date: 26 Aug 92 01:04:08 GMT
Sender: usenet <[e-mail]>
Nntp-Posting-Host: bcarm31
X-Useragent: Nuntius v1.1
To:       [e-mail]

Has anyone tried using Wingz for UNIX via MacX?  I'm having all kinds of
trouble using cut/copy and paste. The cut/copy works fine but I cannot
paste the data back into Wingz. The Macintosh clipboard grabs the data
and won't give it back. If I run xclipboard, I can then paste
successfully but it gobbles memory at several 10's of KB per minute
resulting in an eventual out of memory condition in MacX. The MacX manual
says not to run xclipboard but it's the only thing that gets paste to
work. Note that I also use Framemaker through MacX without any problems
at all. The difference is that Framemaker does not put its cut/copied
data into the Mac clipboard.

I called Informix tech support and was told that MacX is not a supported
platform. I could, however, spend more money and buy a native Mac version
of Wingz and FTP files back and forth. That is not a reasonable way to
solve this problem. Why is Framemaker smart enough to work but Wingz is
not?  Is it a deficiency in MacX?  So far I've had great success with
running all sorts of UNIX applications via MacX without major problems.

Any help would be appreciated.

Configurations:

UNIX:
  HP-425 running HP-UX 7.05
  Wingz V1.1b

Mac:
  System 7.0.1 with Tuneup 1.1.1
  MacX 1.1.7
  MacTCP 1.1

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

From: Bill Miller <[e-mail]>
Subject: Re: Login Message
Date: 26 Aug 92 01:42:12 GMT
To:       [e-mail]


The login message is supposed to be found in /etc/motd.  motd stands for
message of the day, and you can edit that to whatever is appropriate.

You probably need root access to do this though.

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

From: [e-mail]
Subject: cursor input on curses (new prob.)
Date: 26 Aug 92 02:01:12 GMT
Sender: USENET News System <[e-mail]>
Nntp-Posting-Host: hamp.hampshire.edu
To:       [e-mail]


    A while ago I posted a question dealing with the curses library
package.  I asked how I could handle cursor input, e.g., "cursor-up, down,
etc."  Several people replied with variations of "use the keypad() function".
Problem is, keypad() doesn't seem to be implemented in our package of curses
(which is installed on a sun3 system).  It's not in the curses.h file, nor in
any of ther OTHER headers in our collection (I GREPped the directory, so I'm at
quite a loss.  If anybody can explain this and/or offer a solution, I will be
able to finish an ascii version of Minesweeper I'm working on for school.
Thank you!
            [e-mail]

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

From: [e-mail]
Subject: Re: cursor input on curses (new prob.)
Date: 26 Aug 92 07:21:12 GMT
To:       [e-mail]

In article <[e-mail]>, [e-mail] writes:
>
>     A while ago I posted a question dealing with the curses library
> package.  I asked how I could handle cursor input, e.g., "cursor-up, down,
> etc."  Several people replied with variations of "use the keypad() function".
> Problem is, keypad() doesn't seem to be implemented in our package of curses
> (which is installed on a sun3 system).  It's not in the curses.h file, nor in
> any of ther OTHER headers in our collection (I GREPped the directory, so I'm at
> quite a loss.  If anybody can explain this and/or offer a solution, I will be
> able to finish an ascii version of Minesweeper I'm working on for school.
> Thank you!
>             [e-mail]

It's a tricky problem.  To be really portable and terminal
independent, you have to parse the keystrokes and compare them
with the values given in TERMCAP or its equivalent.  I haven't seen
a version of curses that includes this, and most termcap files have
*very* scanty information about key codes, particularly for function keys --
they normally stop with up, down, left and right.  I have a routine to
do this parsing, and some fuller termcap entries, if you're interested.
It reads the termcap file at run time, so it can cope with changes of
terminal type.

--
Tim Kingsmill-Vellacott
Atmospheric, Oceanic and Planetary Physics
University of Oxford, UK.
[e-mail]  preferred

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

From: Helen Todd <[e-mail]>
Subject: How do I compile the BSD Telnet by itself?
Date: 26 Aug 92 20:12:00 GMT
Sender: Helen Todd <[e-mail]>
Followup-To: sender
To:       [e-mail]

Something I am working on necessitates a very stripped-down version of
Telnet.  So, I got a copy of the telnet source from the free bsd-source,
and was planning on making modifications.  The problem is, how does one
re-make/re-compile it, if you are not making the whole distribution?
I read the readme's which indicate the Makefiles are in an odd format,
but having little knowledge of makefiles, I don't know how to go about
just compiling it by itself.  If anyone could help me with this, I'd
much appreciate it..

Thanks
-Helen Todd
[e-mail]
[e-mail]
--
These opinions do not belong to my employer.

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

From: "Steven D. Majewski" <[e-mail]>
Subject: What is the format of a mailbox file?
Date: 26 Aug 92 20:30:46 GMT
Sender: [e-mail]
Followup-To: comp.mail.misc
To:       [e-mail]


What is the format of a unix mailbox file and where can the
definition be found. ( I didn't see any pointers in the man
page for 'mail'. )

How is the status of new, read, etc. indicated in the file?

BTW: the reason for the question is that I need to write a filter
to split/merge and generally reorganize my mailboxes. If anyone has
any hints on a good program to do this, I'm listening. And that's why
I've tacked 'comp.lang.perl' onto the Newsgroups line. I would expect
someone must have done something like this in Perl, already.

- Steve

======== "If you have a hammer, find a nail" - George Bush,'91  =========
 Steven D. Majewski        University of Virginia Physiology Dept.
 [e-mail]        Box 449 Health Sciences Center
 Voice: (804)-982-0831/32    1300 Jefferson Park Avenue
 FAX:   [phone]        Charlottesville, VA 22908

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

From: Cancholech <[e-mail]>
Subject: Thansk
Date: 26 Aug 92 23:33:04 GMT
Sender: [e-mail]
Nntp-Posting-Host: lictor.acsu.buffalo.edu
To:       [e-mail]



I want to thank everyone who sent information about SPSS for unix.
I found that we have sas, now all i have to do is play with it.
This makes my life easier, now i can stay completely away from the
VAX.

chris

--
"I have all my wisdom teeth, two up top and two beneath,
Aye, to recognise my mouth says things that aren't so wise.."
rutgers!ub!blackman [e-mail]

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

From: Ove Ruben R Olsen <[e-mail]>
Subject: Re: how come : ! out of vi always uses sh instead of $SHELL ???
Date: 26 Aug 92 23:39:50 GMT
To:       [e-mail]

John R. Vanderpool writes:
>whenever i :! out of vi it uses /bin/sh instead of $SHELL
>so all of my aliases are lost, etc and makes it very limited
>
>i'm just beginning to see just how powerful vi really is but
>this one is screwing me up royally

In your ~/.exrc file you could have the following:

set shell=/your/favorite/shell

For more information about VI, connect to your nearest VI/EX archive.
At the moment the archives contains
      90 files containing VI/EX docs/help/tutorials/tips/info.
      51 files containing macros.

The VI/EX archives can be found at:

Europe:
   Main site:     alf.uib.no (129.177.30.3)
   Filearea:      pub/lpf/misc
   Peak hours:    07.00 am GMT to 03.00 pm GMT

Japan:
   Mirror site:   utsun.s.u-tokyo.ac.jp (133.11.11.11)
   Filearea:      misc/vi-archive
   Peak hours:    01.00 am GMT to 09.00 am GMT

USA, Canada and Mexico:
   Mirror site:   cs.uwp.edu (131.210.1.4)
   Filearea:      /pub/vi
   Peak hours:    None.

Australia, NZ and the rest Down Under:
   Main site:     monu6.cc.monash.edu.au (130.194.1.106)
   Filearea:      /pub/Vi
   Peak hours:    Not relevent


For more information about the files at the archives and the archives
itself, please read one of the FAQ for Comp.Editors.
If you are in a hurry you may fetch the INDEX file.

If you need more information, you are welcome to mail [e-mail].

\Ruben.


--
        Ove Ruben R Olsen a Gnarfer and VI user. EMAIL: [e-mail].
     Maintaining the EX/VI-archive and a couple of the Comp.Editors FAQs.
    People that are ignorant tend to live a frustrated life, at least when
     it comes to editing - But I do belive this is a general rule in life

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

From: BRANDAUER CARL M <[e-mail]>
Subject: Re: how come : ! out of vi always uses sh instead of $SHELL ???
Date: 27 Aug 92 03:05:05 GMT
Sender: USENET News System <[e-mail]>
Nntp-Posting-Host: tramp.colorado.edu
To:       [e-mail]

[e-mail] writes:

>whenever i :! out of vi it uses /bin/sh instead of $SHELL
>so all of my aliases are lost, etc and makes it very limited

Vi uses the variable 'shell' which must be set explicitly in either
your EXINIT variable or in .exrc.  You can verify your efforts with

    :set shell

after starting vi again.

NOTE: Some versions of vi, including the one I am using now, let the
user modify the variable with

    :set shell=whatever

As always, no spaces around the =.

Good luck and cheers - Carl

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

From: David Ratner <[e-mail]>
Subject: Re: logout message
Date: 27 Aug 92 01:02:04 GMT
Sender: Mr Usenet <[e-mail]>
Nntp-Posting-Host: ipswich.cs.ucla.edu
To:       [e-mail]

[e-mail] (Guo Hongman) writes:


> Can anyone tell how to display some message when I logout?

Put the commands in your .logout file.

Dave
--
* *  ***  *     *    |   Dave "Van Damme" Ratner
* *  *    *    * *  / \  [e-mail]
* *  *    *    ***  \ /
***  ***  ***  * *   |   "Wham Bam, thank you Van Damme!"

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

From: [e-mail]
Subject: Conventions for file name "extensions"
Date: 27 Aug 92 16:19:06 GMT
To:       [e-mail]

I'm not a Unix expert, but since I do sort of know how to use
netnews I was asked to post this question by someone else here in
the company.  Any help you can provide would be most appreciated!

Is there a document or file available which lists "all" of the
filename extension conventions used on Unix systems?  I know, for
example, that on MS-DOS systems that ".EXE", ".COM", ".BAT", etc.,
imply certain characteristics for a file, and that major
applications have their own conventions as well.  Has anyone
collected a list of similar conventions for major Unix applications
and for Unix itself?

If you could send the list to me via email I would appreciate it
very much, as I have access to ftp only with some difficulty.

Thanks!

--
Toby Nixon, Principal Engineer      | Voice   [phone]  Telex 401243420
Hayes Microcomputer Products, Inc.  | Fax     [phone]  CIS   70271,404
P.O. Box 105203                     | BBS     [phone]  AT&T    !tnixon
Atlanta, Georgia  30348             | UUCP uunet!hayes!tnixon  Fido   1:114/15
USA                                 | Internet                [e-mail]

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

From: Allen Douglas <[e-mail]>
Subject: AWK Iteration
Date: 28 Aug 92 18:34:52 GMT
Sender: News System <[e-mail]>
To:       [e-mail]

Hello,
I need to get the shell or awk to take a large file and pipe segments
to a temporary file where I can then run some awk or agrep commands
(on the temporary file.)   The file is a collection of legal cases,
delimited by "of 38 CASES" I want to awk/agrep the individual cases
and output to a results file.


The logic is:

Read in to beginning of first break point (case)-(this output will be discarded)
Start reading the first case until beginning of next case and send text of case to temporary file .
       Process commands on temp file, output to results file(s.)
Read in text of the next case, until the begining the next+1 case.    (replacing the previous output)

The cases (as in legal case) have delimeters of "of 38 CASES"


I haven't been able to fathom the syntax, as I am very green programming Unix.

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

From: "Shailesh M. Potnis" <[e-mail]>
Subject: Need all the details to convert a PC to a UNIX box/X terminal
Date: 28 Aug 92 19:38:33 GMT
Sender: [e-mail]
Followup-To: poster
To:       [e-mail]


    I am looking for the info to convert my 486/33 PC into a unix box and
the possibility/feasibility of its being used as X terminal.  I am looking for
the pointers to the following:

Availibility of a Public Domain PC-UNIX package
If not available in PD the best commercial source (I mean complete but
        inexpensive).
Is 14.5k bps model fast enough or additional hard/soft ware is needed.

The bottom line:

Can I run X based programs on PC?

All comments and suggestions are highly appreciated.

Thanks in advance.

Shailesh

--
Shailesh Potnis, Associate    |Concurrent Engineering Research
Member of Technical Staff    |Center, West Virginia University

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

From: Mitch Wagner <[e-mail]>
Subject: net.views -- USL/BSDI lawsuit -- a bonehead error -- PLEASE READ!
Date: 28 Aug 92 20:52:55 GMT
Followup-To: comp.unix.questions
To:       [e-mail]

Due to a stupid user error on my part, I've accidently deleted the
responses I've received to the net.views question about the USL/BSDI
lawsuit.

If you sent me a response to the question, please re-send it.

If you haven't responded yet, but have been meaning to, here's your
chance to get it in.

Feel free to include whatever flames you like about bonehead
journalists who fail to maintain a responsible policy of backing up
their important data---heaven knows I've been beating myself up about
this.

As a reminder, the original net.views request follows:

     Unix Systems Laboratories recently sued software company BSDI and the
     Regents of the University of California at Berkeley, charging that BSDI's
     commercial Unix workalike and UCB's free software violated USL's
     intellectual property rights. Was USL justified in following the suit?

This question is being posted to gather responses for a regular
opinion column in OPEN SYSTEMS TODAY called "net.views."

By sending an E-mail reply to the above question, you are
granting permission for us to publish your response. A compilation of the
responses to this post will be posted here about two weeks from today.

Please include in your response your name, your employer or
university, your job title or class standing (that is to say, if you
identify yourself as a student, are you a freshman, sophomore, junior
senior, graduate student?), and a telephone number where you
can be reached during the daytime (overseas readers note: that's daytime in
North America).

--
 Mitch Wagner, senior editor, Open Systems Today
 2353 Massachusetts Ave. Suite 47, Cambridge, MA 02140
 [e-mail]  CIS:70212,51  GEnie:MITCH.WAGNER
 For subscription information, please call 516/562-5882

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

From: Startup Consulting Company <[e-mail]>
Subject: How Can I Discover Alternate IP Addresses For Gateway?
Date: 29 Aug 92 06:06:30 GMT
To:       [e-mail]

If you know the IP address of a gateway (the one that is published to
the outside world), is there a way to discover the other IP addresses
that are used for that gateway on the other networks that it services?

Today I was helping someone to setup a SLIP client, and I only had the
published IP address for that client's gateway, not the address of that
gateway on the particular segment where this SLIP client was being setup.
(In other words, right machine, but on a different Class C network.)
At this point, is there anything I can do to discover the gateway's
address, expressed as an IP number that shares the same Class C network
with the SLIP client?

Jim

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

From: Barry Margolin <[e-mail]>
Subject: Re: How Can I Discover Alternate IP Addresses For Gateway?
Date: 29 Aug 92 09:47:21 GMT
NNTP-Posting-Host: gandalf.think.com
To:       [e-mail]

In article <[e-mail]> [e-mail] (Startup Consulting Company) writes:
>If you know the IP address of a gateway (the one that is published to
>the outside world), is there a way to discover the other IP addresses
>that are used for that gateway on the other networks that it services?

Do a DNS query to translate the address into a domain name.  Then look up
the name.  All the addresses should be listed in its A records.
--
Barry Margolin
System Manager, Thinking Machines Corp.

[e-mail]          {uunet,harvard}!think!barmar

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

From: John Navarra <[e-mail]>
Subject: Passing control to user in nawk script
Date: 29 Aug 92 06:25:11 GMT
Sender: "Usenet on news.acns" <[e-mail]>
To:       [e-mail]


I have the following lines in a nawk script:
BEGIN {
if ( !system("test -r outline")) {
          printf "outline exists. Overwrite? "
          getline <"-"
          response=$0
          print response
       }
}

$0 ~ /^[Nn]|NO|no|No|$/ {exit}

FNR==1,FNR==2 {
      print FILENAME, $0 >"outline"
}' $*


    I look in the BEGIN script if the file 'outline' exists and if
it does I want to ask the user if he wants to overwrite the file. The
problem is that I pass all the shell args to the script when I invoke
it. I would like to regain control of the execution of the script if
the file outline exists (i.e. response y or n to overwriting) THEN
pass all the shell args to nawk. Is there an easy way to do this?
Have I made myself clear?

it should do something like
$ program file1 file2 .. fileN
outline exists. Overwrite? y

put put ... results.

or
$ program file1 file2 .. fileN
put put ... results.

I *need* to do the test from within the nawk script -- not from within
the shell script.

-tms

--
You can get further with a kind word | You can get further with a kind word
and a gun than a kind word alone.    | and a phaser than a kind word and a gun.
          --al capone                |           -- John Navarra
=======From the Lab of the MaD [e-mail]========

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

From: Kevin Kadow <[e-mail]>
Subject: Re: mail help: how to reject mail?
Date: 29 Aug 92 07:19:32 GMT
To:       [e-mail]

In article <[e-mail]> [e-mail] (Zhuo Zang) writes:
)Hello,
)this may look like a strange question.
)someone distributes mails to our Dept
)on a weekly base . but not neccessarily
)everyone in this Dept need that info,
)is it possible to reject this kind of
)mail on personal preference?
)
)Thanks in advance !
)
)-zhuo
)

The "filter" utility, which appears to be part of the Elm mailreader (at
least on this machine) files, can take several actions based on the
sender, subject line, addressee, and length, BEFORE the message is
placed in the recipients mailbox.

If you have FILTER available, "man filter" should give you more info.

You need to have a line similar to the following in your .forward file
in your home directory:

|/usr/bin/filter

For filter to handle your incoming mail, you need to create a file,
called .filter_rules, which contains if-then statements to determine
what is done with the messages.

--

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

From: Stew Ellis <[e-mail]>
Subject: Re: Zmodem installation problem
Date: 29 Aug 92 14:48:52 GMT
Sender: "Mr. News" <[e-mail]>
To:       [e-mail]

[e-mail] (Zhuo Zang) writes:

>Hello,
>Thanks for the responses !

>In article <[e-mail]> [e-mail] writes:
>>In article [e-mail], [e-mail] (Zhuo Zang) writes:
>>>Hello,
>>>I try to install the Zmodem on the DECstation
>>>with Ultrix 4.2 .
>>>After I compiled all the programs, rz ,sz ,....
>>>I ran the programs. And it doesn't work.
>>>The problem seems that the Zmodem didn't
>>>direct the data flow to the serial port
>>>correct, I need to set the tty somehow,
>>>but I don't know how.
>>
>>You may be confused about how ZModem works.  It actually sends its output
>>to stdout (on UNIX).  For example, when I dial into my UNIX box, I'll

>I really don't have any idea how those modems work.
>I thought the Kermit , Xmodem , Ymodem and Zmodem all worked
>the same way. They would send the data flow to the serial port
>at one end the comm line, and receive the data at the serial
>port at the other end.

>>type sz <filename> to initiate the download to my machine at home.  My
>>comm program then actually understands that a Zmodem transfer has started,
>>and begins receiving automatically, although if yours doesn't, it can
>>certainly be started manually.
>>   I'm not exazctly sure what you mean by "direct the data flow to the serial
>>port," though.  If you gave a little more detail as to how you're doing things,
>>we might be of a little more help.
>>

>I use the Procomm2.4.2, which doesn't have the Zmodem. But it does
>have the Kermit, Xmodem and Ymodem. and I use the Xmodem and Ymodem
>when I connect to the BBS. on Unix I am using Kermit now,
>but it is slow. The Zmodem package says it also supports
>the Ymodem and Xmodem. So I use sz <file> on Unix to start
>downloading, and use the Ymodem in ProComm to receive <file>.
>According to the Zmodem manual, the Zmodem will auto down shift
>to Ymodem, if it finds the other end doesn't support the Zmodem.
>However, nothing is transmitted in this way.

>Since all the data flow should be transmitted thru the serial port
>when we use the modem to connect to the Unix, I doubt that
>the Zmodem had sent the data to somewhere else, not the serial port.

>>---
>>Joe Hartley          | [e-mail]  -  Whenever you find that you are on the


>zhuo

If you are trying to use sz on the UNIX host to send to X or Ymodem in
procomm on your PC, I believe the author of zmodem (Chuck Forsberg) says
that the procomm ymodem is misimplemented.

Whoever installed sz on your unix machine should have linked it to sx and sy
to support downloading with the X and Y modem protocols respectively.  If
they did not, then you can create links for them in your own binary
directory.

--
--                                                        ___________________
  R.Stewart(Stew) Ellis, Assoc.Prof., (Off)313-762-9765  /   _____  ______
  Humanities & Social Science,  GMI Eng.& Mgmt. Inst.   /        / /  /  / /
  Flint, MI 48504      [e-mail]              /________/ /  /  / /

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

From: Chip Cobb <[e-mail]>
Subject: Man page ---> postscript  .... help!
Date: 29 Aug 92 15:51:48 GMT
Sender: USENET News System <[e-mail]>
Originator: [e-mail]
To:       [e-mail]


Hi,

This is probably a very basic question.  I want to print a man
page on a postscript printer.

I've tried lot's of things but to no avail.

Anyone know how to do this.

Thanks in advance,
Chip
--
 ..................................................
    //  /   O           Chip Cobb
  /    /_    _         Texas Instruments
 /    / / / /_/       Advanced Development

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

From: David Barr <[e-mail]>
Subject: NFS security flawed (was: Re: chown : HELP!)
Date: 29 Aug 92 16:25:02 GMT
Sender: Usenet <[e-mail]>
To:       [e-mail]

In article <[e-mail]> [e-mail] (Vernon Schryver) writes:
>In article <[e-mail]>, [e-mail] (peter da silva) writes:
>> Yes, you should. But because you're using NFS, you don't. NFS is not a full
>> UNIX file system.
>
>This is political nonsense.

No it's not.

>[stuff everyone knows about root trust deleted]

    The NFS concept that you shouldn't by default trust uid=0 has
a fatal flaw.  If a person breaks root on a client machine, all he
has to do is su to any other user on the system (like bin, adm,
daemon, or sys) and have root access within minutes anyway.  NFS
will just accpet the remote uid to be the same user as the local uid,
and you're in.  No authentication.
    Unfortunately, there really isn't a better solution out there.

sigh.

--Dave
--
System Administrator, Population Research Institute    [e-mail]
  One is the loneliest number.
  Two is as lonely as one, just shifted to the left.

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

From: N o s t a l g i a <[e-mail]>
Subject: A Novice^2 nawk question
Keywords: nawk, iteration
Date: 29 Aug 92 16:36:32 GMT
Sender: [e-mail]
Nntp-Posting-Host: linc.cis.upenn.edu
To:       [e-mail]


Hi,


Here's a novice^2 question on awk.  I wrote the following awk program that
tries to find a root of a number (don't ask me why -- it's a part of my process
of learning awk!).  Silly as it is, the program takes two arguments, the
number, and the number of root, and if you enter 4 2, it will give 2
(sqrt(4)=2, ignoring the negative one!) plus the computed original number (how
could I call this in English anyway?).

The algorism I followed was to start with one, and adding one until $1^(that
number) exceeds the number whose root is being searched. At that point, 0.1
will be added to (that number-1), until it will exceed the number whose root is
being searched. Pretty stupid, but works fine -- except for two things: If the
program goes to the very bottom (and print out "last"), then the program won't
read the next record, and I will have to runt he program again. How this is so?
I gather this has something to do with "getting away" from the loop, but I
cannot put my finger on what.

Second, if I enter numbers like 40 500 (yes, 500th-root of 40!), they will give
an error message saying "nawk: pow result out of range". How is this so?  Is
there anyway to evade this problem?

Third, is there any better algorism to do the same thing without invoking the
build-in functions?

Thank you very much,


Kenjiro Matsuda
Dept. of Linguistics
University of Pennsylvania
[e-mail]

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


End of INFO-UNIX Digest
***********************