Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!utgpu!water!watnot!watmath!clyde!rutgers!ames!oliveb!sun!gorodish!guy
From: guy@gorodish.UUCP
Newsgroups: comp.unix.questions,comp.unix.wizards,comp.lang.c
Subject: Re: Filtering Everything
Message-ID: <16583@sun.uucp>
Date: Mon, 13-Apr-87 00:41:38 EST
Article-I.D.: sun.16583
Posted: Mon Apr 13 00:41:38 1987
Date-Received: Tue, 14-Apr-87 00:46:38 EST
References: <919@watmum.UUCP> <6447@bu-cs.BU.EDU> <3446@rsch.WISC.EDU>
Sender: news@sun.uucp
Distribution: comp
Lines: 12
Xref: utgpu comp.unix.questions:1697 comp.unix.wizards:1758 comp.lang.c:1588

> BTW - SysV.3 *has* pttys - they're called sxt's (I think).  Someone
> will jump on this if I'm wrong....

You bet.  System V has "sxt"s, but they are *not* pseudo-ttys.  They are just
switches that get stuck in front of regular ttys.  To quote from a
comment at the beginning of "sxt.c":

	/*  A real terminal is associated with a number of virtual tty's.
	 *  The real terminal remains the communicator to the low level
	 *  driver,  while the virtual terminals and their queues are
	 *  used by the upper level (ie., ttread, ttwrite).
	...