Re: Clearing the input buffer before a read.

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Article #1851

#1851

From: Paul Chamberlain
Date: Mon, 26 Nov 1990 16:36

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In article <1990Nov26.001425.15563@massey.ac.nz> K.Spagnolo@massey.ac.nz (Ken Spagnolo) writes:
>I want to
>be able to flush the input buffer just before the read ...

This is pretty nasty but it might do what you want:

	old_modes=`stty -g`		# save old modes
	stty -icanon min '^@' time '^@'	# read whats already there
	read junk			# read all thats waiting
	stty $old_modes			# restore old modes

You may want to make this bullet-proof about interrupts though.

I tried this on AIX Version 2 (RT).

Paul Chamberlain | I do NOT represent IBM.     tif@doorstop, sc30661 at ausvm6
512/838-7008     | ...!cs.utexas.edu!ibmchs!auschs!doorstop.austin.ibm.com!tif

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From: tif@doorstop.austin.ibm.com (Paul Chamberlain)
Newsgroups: comp.unix.shell
Subject: Re: Clearing the input buffer before a read.
Message-ID: <4328@awdprime.UUCP>
Date: 26 Nov 90 16:36:04 GMT
References: <1990Nov26.001425.15563@massey.ac.nz>
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