redirecting the output of pg to another tty

[Guy Harris]

>La dee da dee da... If only you were using BSD:
>
>  % pty pg FILE > /dev/ttyxx

If he were using BSD, he might not have "pg".

Is "pty" completely incapable of running under any system not BSD? (Just
because something isn't BSD doesn't mean it doesn't have pseudo-ttys;
even if they're different in some ways from BSD ptys, e.g.  the S5R4
ptys, it may be possible to port "pty" to that system.)