Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watnot!watmath!clyde!cbatt!ihnp4!gargoyle!sphinx!kdw1 From: kdw1@sphinx.UUCP Newsgroups: comp.unix.questions Subject: Help: SXTs Message-ID: <1411@sphinx.uchicago.edu> Date: Tue, 7-Apr-87 10:50:05 EST Article-I.D.: sphinx.1411 Posted: Tue Apr 7 10:50:05 1987 Date-Received: Fri, 10-Apr-87 02:58:30 EST Reply-To: kdw1@sphinx.UUCP (Keith Waclena) Organization: University of Chicago, Graduate Library School Lines: 31 Keywords: SXT, job control, Korn shell, System V Can anyone enlighten me about SXTs under System V? We have them on our AT&T 3B5, and I know they're used in shl(1) for "job control". But I have no documentation whatsoever, and the shl code makes no sense to me. What I'd like to know is as follows: 1. What *are* they? Are they pseudo-ttys? Pseudo-pseudo-ttys? 2. How do you use them? 3. What is the relationship between stty(1)'s SWTCH character and sxts? I know it's used to get shl's attention, but what are the details? Why doesn't my termio(7) man page discuss this character? 4. How useful are sxt's, really? Are they expensive in any sense? Our /dev is full of 'em. 5. The kicker: why couldn't I get the Korn Shell to use them to give me job control? Using shl indicates that you can control blocking and such. Now, I know this is a major request. Is there a book that covers these things? Can someone tell me the name of a manual to try to get from AT&T? Or does some voluble net personality want to write a nice long description? I'd also be interested in well commented code that uses them. Thanks in advance! Keith Keith Waclena BITNET: xrtkdw1@uchimvs1.bitnet University of Chicago UUCP: ...ihnp4!gargoyle!sphinx!kdw1 Graduate Library School Internet: keith@gargoyle.uchicago.edu 1100 E. 57th Street Chicago, Illinois 60637 #include