ytalk [-s] [-Y] [-E] [-i] [-q] [-v] [-h hostname_or_ip] username...


       YTalk 3.3.0

       YTalk is in essence a multi-user chat program.  It works almost exactly
       like the UNIX talk program and even communicates  with  the  same  talk
       daemon(s), but YTalk allows for multiple connections.

       The username field may be formatted in several different ways:
            name          - some user on your machine
            [email protected]     - some user on a different machine
            name#tty      - some user on a particular terminal
            [email protected] - some user on a particular tty on a
                            different machine
            [email protected]#tty - same as "[email protected]"
            aliasname     - an alias defined in your .ytalkrc

       You can specify multiple user names on the command line, ie:

            ytalk george [email protected] [email protected]

       The -s option starts your YTalk window in a shell.

       The  -Y  option  requires  a  capital Y or N as an answer to any yes/no

       The -E option requires you to press  escape  once  before  answering  a
       yes/no question (for people who type looking at the keyboard).

       The  -i  option  disables  the  auto-invite port (meaning you won't see
       "talk to [email protected]", but your talk daemon will beep you instead).

       The -q option causes YTalk to prompt you before quitting.

       The -v option prints the program version and exits.

       The -h option specifies the name or address of the local machine;  this
       is  useful  on multi-homed machines, or virtual hosts, to specify which
       network interface to use for communication.

       For each user on the command line, YTalk will attempt to connect to the
       talk daemon on the specified user's host and determine if that user has
       left an invitation for you to call.  If not, YTalk leaves an invitation
       for  him  and  tells  his  talk  daemon  to send an announcement to his
       screen.  There is no dedicated YTalk daemon.  Right now, YTalk is  able
       to  communicate  with BOTH existing versions of UNIX talk daemons.  For
       any particular host, YTalk will attempt to communicate with a talk dae-
       mon  the  caller's host also supports.  If the two hosts have no daemon
       in common, then UNIX talk will not function at all, but a connection is
       possible through (and only through) YTalk.
       the screen is further subdivided into smaller and smaller windows,  one
       for  each  connected user.  Right now, the number of connected users is
       limited by the number of lines on your terminal (or window),  for  each
       connected user needs at least three lines.

       As  each  new  user  is  added to the conversation, YTalk will transmit
       information about that user to all other connected YTalk users so  that
       their screens will also subdivide and incorporate the new user.  If the
       new user is using UNIX talk, then information about  him  will  NOT  be
       transmitted,  for his screen would be unable to accept multiple connec-
       tions.  I have given brief thought to allowing at least the  output  of
       UNIX  talk  users to be transmitted to all connected YTalk users, but I
       have not written any code to do so.  Note that even  though  UNIX  talk
       cannot  handle  multiple connections, it is still possible for YTalk to
       handle multiple UNIX "talk" connections.  For  example,  george  (using
       YTalk)  could communicate with fred and joe (both using UNIX talk), but
       fred and joe would be unaware of each other.  The best  way  to  under-
       stand the limitations that UNIX "talk" places on YTalk is to test vari-
       ous connections between the two and see how things work.


       Whenever you are using YTalk, you can hit the ESCAPE key to bring up  a
       menu which at this moment has these options:

               a: add a user
               d: delete a user
               k: kill all unconnected
               o: options
               r: rering all
               s: shell
               u: user list
               w: output user to file
               q: quit

       By  choosing option "a", you are given the opportunity to type the name
       of any user you wish to include into the  conversation.   Again,  YTalk
       will  accept  an  invitation from that user if an invitation exists, or
       will leave an invitation and ring the given user.

       By choosing option "d", you can select the name of a connection to ter-

       By choosing option "k", you can make YTalk forget all pending (waiting)

       By choosing option "o", you can view and/or modify  any  of  the  YTalk
       options.  See the OPTIONS section below for a list of YTalk options.

       By  choosing  option "r", all users that have not yet responded to your
       talk invitation will be re-rung.

       be terminated.

       Oh, one other thing:  when user A attempts to ytalk to user B, but user
       B  is already ytalking with user C, user A's YTalk program will realize
       that user B is already using YTalk, and will communicate with user  B's
       YTalk program directly in order to initialize the conversation.  User B
       will see a nice windowed message like:

            Do you wish to talk with user A?

       and he will be prompted for a yes/no answer.  This, in my  opinion,  is
       much  preferable  to  blitting  the announcement message and messing up
       user B's screen. The command-line option "-i" turns this off.


       When you select Options off of the main menu, you are given the  oppor-
       tunity to edit the YTalk options.  The current options are:

            s: turn scrolling [off/on]
            w: turn word-wrap [off/on]
            i: turn auto-import [off/on]
            v: turn auto-invite [off/on]
            r: turn reringing [off/on]
            p: [don't] prompt before rerings
            q: [don't] prompt before quitting

       If  scrolling  is  turned  on, then a user's window will scroll when he
       reaches the bottom, instead of wrapping back around to the top.

       If word-wrap is turned on, then any word  which  would  overextend  the
       right  margin  will  be  automatically  moved  to the next line on your

       If auto-import is turned on, then YTalk will assume that  you  wish  to
       talk  to  any  users  which connect to other YTalk users which are con-
       nected to you.  That last sentence does make sense; try  again.   YTalk
       will  add these users to your session automatically, without asking you
       for verification.

       If auto-invite is turned on, then YTalk will automatically  accept  any
       connection requested by another user and add them to your session.  You
       will not be asked for verification.

       If rering is turned on, then YTalk will re-ring any user who  does  not
       respond to your invitation within 30 seconds.

       If  prompt-rering is turned on, then YTalk will ask you before re-ring-
       ing a user.

       If prompt-quit is turned on, then YTalk will wait  for  keyboard  input
       before quitting.

       where option is one of scrolling ,  word-wrap  ,  auto-import  ,  auto-
       invite  ,  rering , prompt-rering , prompt-quit , caps , escape-yesno ,
       noinvite , ignorebreak , or beeps .  Setting these options  works  just
       like described above.  For example, one could enable word-wrap with the

            turn word-wrap on


       You can setup aliases so you don't have to type the full address of the
       user you want to ring.  There are three types of aliases:

       alias aliasname@ username@
                   Replaces  aliasname@host with username@host for every host.
                   The '@' at the end of username@ is not required.

       alias @aliashost @realhost
                   Replaces user@aliashost with user@realhost for every  user.
                   The '@' at the beginning of @realhost is not required.

       alias aliasname user@host
                   Replaces aliasname with user@host.


       On machines with multiple IP addresses (multiple interfaces, or virtual
       hosts), you can choose the default address  to  use  for  communication
       with  YTalk,  using  the  localhost command in your .ytalkrc file.  The
       syntax is:

       localhost hostname-or-IP-address


       The purpose of readdressing is to allow YTalk connections across point-
       to-point network gateways where the local machines know themselves by a
       different address (and typically hostname) than  the  remote  machines.
       The basic syntax of a readdress command is this:

            readdress from-address to-address domain

       The  readdress  statement  simply  makes a claim that the machine(s) in
       domain communicate with the machine(s) at  from-address  by  sending  a
       packet  to  to-address .  Since most users have no use for this whatso-
       ever, I'll describe it only briefly.

       THIS IS NOT ROUTING.  For example, my machine at home is connected  via
       PPP  to the network at my office.  My machine at home thinks its ether-

       which tells my home  machine  to  advertise  itself  as  ""
       instead  of  ""  when YTalk-ing to machines on the network
       "".  On the office end, the  readdress  command  translates


       which the office machines basically ignore.

       Note  that,  in  this  case, the problem could also have been solved by
       telling the home YTalk to use the  interface,  when  doing
       YTalk requests across the PPP link.


           System-wide defaults file.

           User's local configuration file.  This file overrides
           options set in the system ytalkrc file.


       Andreas Kling
       <[email protected]>


       Britt Yenne


       Roger Espel Llima
       Jessica Peterson


       Special  thanks  to Carl Edman for numerous code patches, beta testing,
       and comments.  I think this guy spends as much time on ytalk as I do.

       Special thanks to Tobias Hahn and Geoff W. for beta testing and sugges-

       Thanks to Sitaram Ramaswamy for the original YTalk manpage.

       Thanks to Magnus Hammerin for Solaris 2.* support.

       Thanks to Thilo Wunderlich for Linux support.

       Thanks to Alexander Rigbo for patches, testing and many good ideas.


       Please   mail   any   bugs  to  the  maintainer  of  this  version,  at
       <[email protected]>



       This program is free software; you can redistribute it and/or modify it
       under  the  terms of the GNU General Public License as published by the
       Free Software Foundation; either version 2 of the License, or (at  your
       option) any later version.

       This  program  is  distributed  in the hope that it will be useful, but
       WITHOUT ANY  WARRANTY;  without  even  the  implied  warranty  of  MER-
       Public License for more details.

YTalk 3.3.0                       2 Jan 2005                          YTalk(1)

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