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Re: bizarre trap behavior while reading a file

From: Steven W. Orr
Subject: Re: bizarre trap behavior while reading a file
Date: Tue, 29 Mar 2011 08:02:17 -0400
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv: Gecko/20110303 Thunderbird/3.1.9

On 3/29/2011 2:33 AM, Mart Frauenlob wrote:
On 28.03.2011 18:03, tytus64 wrote:


trap "" HUP; cat $log_file | {
while read line

useless use of cat!

while read ... < file

no need for a subshell actually (introducted by the pipe).

I'm a big opponent of useless cats, but I have one question:

Is there a difference between

while read line < file


while read line
done < file

Or does this fall into the category of style?


Time flies like the wind. Fruit flies like a banana. Stranger things have  .0.
happened but none stranger than this. Does your driver's license say Organ ..0
Donor?Black holes are where God divided by zero. Listen to me! We are all- 000
individuals! What if this weren't a hypothetical question?
steveo at syslang.net

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