So what's different about having input redirected?

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#2603

From: J. Gregory Noel
Date: Wed, 06 Dec 1989 23:52

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I have a program that I've been trying to debug, where
	prog <testfile
works just fine, but
	prog <testfile option
crashes the machine.  In the latter case, the program never seems to enter
the main() proceedure.  Also,
	sdb <testfile prog
works, and allows me to debug the program, while
	sdb <testfile prog option
wedges the system even before I tell it to start running the program!  (Mouse
won't move, no response to keystrokes, etc.)  I'm really stumped by this one;
what in the world could cause such strange symptoms?
-- 
J. Gregory Noel, UNIX Guru         greg@noel.cts.com  or  greg@noel.uucp

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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!mailrus!ames!excelan!unix!hplabs!hp-sdd!ncr-sd!noel.cts.com!greg
From: greg@noel.CTS.COM (J. Gregory Noel)
Newsgroups: comp.sys.amiga.tech
Subject: So what's different about having input redirected?
Message-ID: <0641.AA0641@noel>
Date: 6 Dec 89 23:52:03 GMT
Lines: 14