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From: Dan Jacobson <jidanni@deadspam.com>
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Subject: < /dev/null while read a; do :; done
Date: 29 Mar 2002 22:29:26 +0800
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I was feeling pretty bad when line 2 didn't work:

while read a; do :; done < /dev/null
< /dev/null while read a; do :; done 
while < /dev/null read a; do :; done 
cat /dev/null|while read a; do :; done 

however it is certainly my conceptual problem, not bash's. 
-- 
http://jidanni.org/ Taiwan(04)25854780