talk Command
  
  
  Purpose
  
  Converse with another user.
  
   Syntax
  
  talk { 
  User@Host | Host
  !User | Host.
  User | Host:User 
  } [ Tty ] [ Pty ]
  
  Description
  
  The /usr/bin/talk command allows two users on the same host or on
  different hosts to have an interactive conversation.  The talk
  command  opens  both  a  send window and a receive window on each
  user's display.    Each  user  is then able to type into the send
  window while the talk command displays what the other user is
  typing.
  
  To initiate a conversation, a local user executes the talk com-
  mand  and  specifies a remote user's login ID.  The remote user's
  login ID can contain NLS characters.  If the remote  user is on a
  remote host, the name of  the  host must also be specified in one
  of the following ways:
  
  User@Host
  Host!User
  Host.User
  Host:User
  
  When using full domain names, the only valid form for specifying
  the user and host is User@Host.  For example,
  michael@host17.dev.ibm.com initiates a conversation with user
  michael at host host17 in the dev.ibm.com domain.
  
  When the local user initiates the conversation, a message is sent
  to the remote user, inviting a conversation.  If the  local  user
  also specifies tty, the invitation message is sent only to the
  specified terminal.  Otherwise, the invitation is sent to the re-
  mote  user's login terminal.  This usually is the console, but it
  may  be another terminal.  Once this invitation is received,  the
  talk command displays two windows on the local user's terminal
  and displays progress messages until the remote user  responds to
  the invitation.
  
  Note:	If the remote user is running AIXwindows and has no other
  terminals open, the talk command cannot send an invitation.  The
  remote user must have  opened at least one other HFT besides that
  in which AIXwindows is running.
  
  To have the conversation, the remote user also has to execute the
  talk command from any terminal and specify the local user's ac-
  count name and host name, if appropriate.   When  the remote user
  accepts the invitation, the talk command displays two windows on
  each user's terminal.    One window displays what is typed by the
  local user; the other window displays what is typed by the remote
  user.  To end the conversation, either user can press  the Inter-
  rupt (Ctrl-C) key sequence and the connection is closed.  The In-
  terrupt key sequence can be displayed and modified using the 
  stty command.
  
  If the users involved in the conversation are using National
  Language Support (NLS) capabilities, their terminals must support
  the  printing of NLS characters.  The same is true for  conversa-
  tions using Kanji capabilities;  the  terminals  being  used must
  support the printing of Kanji characters.
  
  The talk command requires a valid address to which to bind.  The
  host name of the remote machine must  be  bound to a working net-
  work interface, which is usable by other network  commands,  such
  as the ping command.  If a machine has no network interface, that
  is a standalone  machine, it must bind its host name to the loop-
  back address (127.0.0.1) in order for the talk command to work.
  For example, two users named local and remote on a standalone
  machine could initiate a conversation, using the talk command, by
  entering:
  
  talk remote@loopback
  
  To which user remote responds:
  
  talk local@loopback
  
  To disallow talk command invitations, the remote user can issue
  the  mesg n command.
  
  Note:	The talk command uses the Talk 4.3 protocol, which is not
  compatible with 4.2 versions of the talk command.
  
  Examples
  
  1.	To talk to a user logged in on a remote host, enter:
  
  talk dale@host2
  
  In this example, the local user wants to talk with user dale who
  is logged in on host2.
  
  2.	To talk to a user only if that user is logged in on the con-
  sole of a remote host, enter:
  
  talk dale@host2 console
  
  User dale receives this message only if logged in on the console
  at host2.
  
  Implementation Specifics
  
  This command is part of the TCP/IP Facility in Network Facilities
  in Base Operating System (BOS) Runtime.
  
  Related Information
  
   Network Overview in AIX Version 3.2 System User's Guide: Commun-
  ications.
  
  The  mesg command,  stty command.
  
  The  named daemon,  talkd daemon.
  
   Conversing with a Remote User in AIX Version 3.2 System User's
  Guide: Communications.