From: gerard@uwovax.uwo.ca (Gerard Stafleu)
Subject: Re: toegang tot InterNet in NL?
Organization: University of Western Ont, London
Date: Mon, 16 Nov 1992 13:32:26 GMT

In article <1992Nov15.102047.28093@sserve.cc.adfa.oz.au>, 
   vla@ccadfa.cc.adfa.oz.au (Louis Verhagen) writes:
> Verkeerde "talk deamons". Waarschijnlijk zit een van jullie met
> talkd versie 4.2 en de andere met talkd 4.3 . 

Aha, ik kan hier dus even een kans tebaatgrijpen om een artikeltje dat
ik onlangs voor ons rekencentrumnieuwskrantje (dat opgebakken wordt 
omgezet in een rekencentrumoudskrantje) wat wijdere verspreiding te 
geven.


---------------------------------------------------------------------
                              REACH OUT AND TALK

Many  machines  on the network support a program called talk.  You can use this
program to  directly  communicate,  via  your  terminal,  with  anyone  who  is
currently logged in to a machine that is on the net, provided that machine also
supports talk.  In this way talk differs from many other utilities,  which  can
only  be  used  for  communication between people who are logged on to the same
machine.

On Unix machines, the command is:

    % talk address

On the VAX, it is:

    $ talk address
        or
    $ talk/old address

Here address is an internet address, for example jdoe@julian.uwo.ca (See  below
for the usage of /old).

When you invoke the program talk, your screen will be split into two parts.  On
the top half of your screen, you will see the message:

    [Waiting for your party to respond]

At the same time, the party you are trying to reach sees the message:

    Message from Talk_Daemon@grafxa.uwo.ca at 12:58 ...
    talk: connection requested by jdoe@julian.uwo.ca.
    talk: respond with:  talk jdoe@julian.uwo.ca

When the party responds, you can start to talk to each to each other, by typing
in  text.  The text you type in will appear at the top half of your screen, the
text the respondent types in will appear at the bottom  half  of  your  screen.
When you are done, you exit by typing a Control-C.

If you get a message that says something about waiting for an invitation on the
caller's machine, there is probably a compatibility problem  between  the  talk
you are using, and the talk the machine you are trying to contact is using.

Unix  machines  in  general run one of two versions of talk: either the 4.3 bsd
version, which is the most recent one, or the older 4.2 bsd version.  These two
versions  of  talks  cannot talk to each other.  You have to determine by trial
and error to which machines your machine  can  and  cannot  talk.    Most  Unix
machines run the 4.3 bsd version of talk; some older machines may still run the
4.2 bsd version.

On the VAX, which of the two , talk or talk/old, you should use depends on  the
version  of  talk the machine you are trying to reach supports.  If one doesn't
work, try the other.  If you use just talk without /old,  you  can  communicate
with  machines  that run the 4.3 bsd version of talk.  If you use talk/old, you
can communicate with the 4.2 bsd version of talk.

Similar considerations apply to Ultrix.  You  use  either  talk,  the  4.3  bsd
version, or otalk, the 4.2 bsd version.

You  can get more information about talk by giving the command help talk on the
VAX, or man talk on Unix machines.

The following is a list of systems, and which version of talk they  are  using.
"Old"  denotes  the  old  or  4.2 bsd version, "New" denotes the new or 4.3 bsd
version.

    System  Version

    Sun 3   Old
    Sun 4   Old
    SGI     New
    MIPS    New
    AIX     New
    HP      New
    Sequent Old
    Ultrix  New & Old (via otalk)
    Next    New
    VAX/VMS New & Old (via talk/old)

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

> P.S. Eerst dacht ik dat mijn "talk deamon" het niet goed deed omdat
> hier Corioli de verkeerde kant op werkt, dat bleek later gelukig niet
> zo te zijn.

Dat zou ik maar niet te gauw denken.  De zuigende passingproblemen van 
die verkeerddraaiende corioliseffecten kunnen behoorlijk zijn.

----
Gerard Stafleu
email: gerard@uwo.ca
CCS, NSC 202, University of Western Ontario,
London, Ontario, Canada N6A 5B7
(519)661-2151
Newsgroups: soc.culture.netherlands