HELLO(C)                 XENIX System V                  HELLO(C)



     Name
          hello - Send a message to another user.

     Syntax
          hello user [ tty ]

     Description
          hello sends messages from one user to another.  When first
          called, hello displays the following message:
               Message from sender's-system! sender's-name sender's-
               tty
          The recipient of the message should write back at this
          point.  Communication continues until an interrupt is sent.
          (On most terminals, pressing the Del key sends an
          interrupt.) At that point hello prints ``EOT'' on the other
          terminal, and exits.

          To write to a user who is logged in more than once, the user
          can employ the tty argument to specify the appropriate
          terminal name.  The who(C) command can be used to determine
          the correct terminal name.

          Permission to write may be allowed or denied by the
          recipient, using the mesg command.  Writing is allowed by
          default.  Certain commands, such as nroff and pr, prohibit
          messages in order to prevent disruption of output.

          If the character ! is found at the beginning of a line,
          hello calls the shell to execute the rest of the line as a
          command.

          The following protocol is suggested for using hello.  When
          first writing to another user, the sender should wait for
          that user to write back before sending a message.  Each
          party should end each message with a signal indicating that
          the other may reply: o for ``over'' is conventional.  The
          signal oo for ``over and out'' is suggested when
          conversation is about to be terminated.

     Files
          /etc/utmp
          /bin/sh

     See Also
          mesg(C), who(C), mail(C), write(C)










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