Date: Sun, 07 Jul 1996 12:31:48 -0400 From: Gary Chrysler <tcg@ime.net> To: Greg Lehey <grog@lemis.de> Cc: FreeBSD Questions <questions@FreeBSD.org> Subject: Re: FreeBSD 2.1 Help Message-ID: <31DFE674.779D@ime.net> References: <199607071622.SAA16843@allegro.lemis.de>
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Greg Lehey wrote: > > Gary Chrysler writes: > > > > (lots of good stuff omitted) > > > > Yea, I agree, Try several different tests.. :) > > Can't hurt. > > > > 99.999% of my experiance is Dos based. So I have no idea what > > -clocal does. You can bet I'm looking though.. :) > > Sorry, I keep forgetting that I should explain these things. To quote > the termios(4) man page, > > If CLOCAL is set, a connection does not depend on the state of the modem > status lines. If CLOCAL is clear, the modem status lines are monitored. > > Under normal circumstances, a call to the open() function waits for the > modem connection to complete. However, if the O_NONBLOCK flag is set or > if CLOCAL has been set, the open() function returns immediately without > waiting for the connection. > > In stty, on is shown as clocal, and off is shown as -clocal. The > modem control line to which it refers is DCD (Data Carrier Detect), > which only comes on when you have established a connection. In the > olden days, before modems had autodial capability, this was > appropriate, but now it's a pain. > > Greg Thank you for the explanation, I understand. -Enjoy Gary ~~~~~~~~~~~~~~~~ Improve America's Knowledge... Share yours The Borg... Where minds meet (207) 929-3848
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