can i test for keyboard input?

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#962

From: mike newman
Date: Wed, 03 Oct 1990 04:17

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I would like to be able to respond dynamically to keyboard input
(without doing getchar and waiting for the user to type something) by
either:

     1)	Having some kind of interrupt routine that will be called
	every time a key is pressed.

     2) Calling some OS routine that returns TRUE/FALSE if there
	is/isn't any keyboard input waiting.  I know my little ol' ST
	at home (bless it's heart :-) has such a call: does unix?

     3) Any other way :-).

This seems like it should be possible: musn't the shell do something
along these lines to handle type ahead? (???)

Please email replies: if there is interest, I will post a summary.

mike newman
mwnewman@msg.waterloo.edu

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Message-ID: <1990Oct3.041737.2280@watmath.waterloo.edu>

Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watmath!watmsg!mwnewman

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Newsgroups: comp.unix.programmer,comp.unix.questions
Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watmath!watmsg!mwnewman
From: mwnewman@watmsg.uwaterloo.ca (mike newman)
Subject: can i test for keyboard input?
Message-ID: <1990Oct3.041737.2280@watmath.waterloo.edu>
Sender: daemon@watmath.waterloo.edu (Owner of Many System Processes)
Organization: University of Waterloo
Date: Wed, 3 Oct 90 04:17:37 GMT
Lines: 20