TALK(TC)                                   UNIX System V



     Name
          talk - talk to another user


     Syntax
          talk person [ ttyname ]


     Description
          Talk is a visual communication program  which  copies  lines
          from your terminal to that of another user.

          If you wish to talk to someone on  your  own  machine,  then
          person  is just the person's login name. If you wish to talk
          to a user on another host, then person is of the form :

                              host!user  or
                              host.user  or
                              host:user  or
                              user@host

          though user@host is perhaps preferred.

          If you want to talk to a user who is  logged  in  more  than
          once,  the  ttyname  argument  may  be  used to indicate the
          appropriate terminal name.

          When first called, it sends the message

               Message from TalkDaemon@his_machine...
               talk: connection requested by your_name@your_machine.
               talk: respond with: talk your_name@your_machine

          to the user  you  wish  to  talk  to.  At  this  point,  the
          recipient of the message should reply by typing

               talk  your_name@your_machine

          It doesn't matter from which machine the recipient  replies,
          as  long  as his login-name is the same.  Once communication
          is established, the two  parties  may  type  simultaneously,
          with  their  output  appearing  in  separate windows. Typing
          control L will cause the screen to be reprinted, while  your
          erase  and  kill characters will work in talk as normal.  In
          addition, control-W is defined as a word-kill character.  To
          exit,  just  type  your interrupt character; talk then moves
          the cursor to the bottom of  the  screen  and  restores  the
          terminal.

          Permission to talk may be denied or granted by  use  of  the
          mesg(TC)   command.   At  the  outset  talking  is  allowed.
          Certain  commands,  in  particular  nroff(TC)   and   pr(TC)
          disallow messages in order to prevent messy output.

     Files
          /etc/hosts     to find the recipient's machine
          /etc/utmp to find the recipient's tty


     See Also
          mesg(TC), who(TC), mail(TC), write(TC), talkd(ADMN).


     Bugs
          The version of talk(TC) released with System V  STREAMS  TCP
          uses  a protocol that is incompatible with the protocol used
          in the version released with 4.2BSD.  The  new  protocol  is
          compatible with 4.3BSD.  The older protocol was not portable
          across different machine architectures.

          Talk may be confused if you attempt  to  use  the  host.user
          format with a fully qualified hostname.


     (printed 8/17/89)                                  TALK(TC)