fork/exec clobbers write. I need ideas why...

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LEARN ABOUT BSD

talk

TALK(1) 						      General Commands Manual							   TALK(1)

NAME

       talk - talk to another user

SYNOPSIS

       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 you 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 host@user 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, kill, and word kill characters will work in talk as normal.  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 command.	At the outset talking is allowed.  Certain commands, in particular
       nroff and pr(1) disallow messages in order to prevent messy output.

FILES

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

SEE ALSO

       mesg(1), who(1), mail(1), write(1)

BUGS

       The version of talk(1) released with 4.3BSD uses a protocol that is incompatible with the  protocol  used  in  the  version  released  with
       4.2BSD.

4.2 Berkeley Distribution					 November 27, 1996							   TALK(1)

Programming