A google search finds

http://www.issociate.de/board/post/290923//dev/pts/n.html

The short answer is open /dev/ptmx .

-Connie Sieh

On Wed, 12 Apr 
2006, David Beauregard wrote:

> I am still trying to figure out how to get a pty in SL.  I have found
> programs that will create the link between the master and slave terminals=
> 
>  so
> that i can send serial commands via ethernet.  But, all these programs
> require a pty.  In Redhat 7 in /dev there are many pty file descriptors, =
> 
> in
> SL all i can find is  pts/0-12 but these are not the same and will not wo=
> 
> rk
> with these programs.=20=20
> 
> How do i create a pty in SL?
>