Path: utzoo!utgpu!water!watmath!clyde!att!ucbvax!decwrl!sun!gorodish!guy
From: guy@gorodish.Sun.COM (Guy Harris)
Newsgroups: comp.unix.questions
Subject: Re: Printer Connection Problem (really: how to use stty with lpd)
Keywords: postscript printer, LC-890, flow control
Message-ID: <60857@sun.uucp>
Date: 21 Jul 88 18:30:31 GMT
References: <227@drd.UUCP> <60198@sun.uucp> <229@drd.UUCP>
Sender: news@sun.uucp
Lines: 48

> >You must be looking at the wrong man page; you want either TERMIO(4) or
> >STTY(1V).  Those describe the S5 tty driver modes, as emulated by SunOS
> >3.x, or the S5 "stty" command to set and print them.  TTY(4) and STTY(1)
> >describe the V7/BSD tty modes, so it's not surprising that it "fails to
> >mention what ANY of those codes mean" since they're not V7/BSD modes.
> 
> 	It turns out that stty (1V) simply brings up stty (1) which of course
> 	mentions nothing about termio(4).

The manual page source we have - which is what should be in the on-line
documentation, and should have been used to generate the printed documentation
- has completely separate "stty.1" and "stty.1v" files, so either they were
printed wrong (if you're referring to the printed documentation) or set up
wrong on the distribution tape (if you're referring to the on-line
documentation), or the "man" command (assuming that's how you read it) did the
wrong thing or was told to do the wrong thing.  Try "man 1v stty", giving the
"1v" explicitly (there have been some problems with "man" giving the S5 man
page by default, maybe on your system "man stty" gave the 4BSD page by
default).

STTY(1V) does refer to TERMIO(4V).

> 	Another thing the man pages don't clue you into is the proper use of
>	the < and > when using stty.

"Fixed in 4.0":

DESCRIPTION
     stty sets certain terminal I/O options for the  device  that
     is  the  current  standard  output.   Without  arguments, it
     reports the settings of certain  terminal  options  for  the
     device  that  is  the  standard  output;  the  settings  are
     reported on the standard error.

...

SYSTEM V DESCRIPTION
     stty sets or reports terminal options for the device that is
     the current standard input; the settings are reported on the
     standard output.

> Question:  Is there a convenient way to monitor what is coming back from
> the printer to see if it is issuing any XOFF's so that I may eliminate
> flow control as the source of my problem?

I think there are hardware boxes ("line monitors" that do this), but they cost
money (you may be able to rent one if you don't have one, but that still costs
money...).