SCO Unix 'talk' command

[Guy Harris]

>it doesn't matter who you try to talk to, but if your /etc/utmp
>doesn't have an entry for your X terminal pseudo tty, you'll get 
>a funny error message.  maybe my sense of humor is deluded, but 
>check it out anyway, eh?

Credit where credit is due, unless the message is funnier than "You
don't exist. Go away.", which is the message that 4.3BSD's "talk" issues
in that case....