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Re: Error in read implementation and/or documentation
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From: |
Chet Ramey |
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Subject: |
Re: Error in read implementation and/or documentation |
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Date: |
Sat, 27 Jul 2013 16:10:17 -0400 |
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User-agent: |
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:17.0) Gecko/20130328 Thunderbird/17.0.5 |
On 7/27/13 1:32 PM, Andreas Schwab wrote:
> Chris Down <chris@chrisdown.name> writes:
>
>> Cannot reproduce.
>>
>> $ printf 01 | read -n3
>> $ echo $?
>> 1
>
> Try the same with input from the terminal.
You are reading one character at a time, so ICANON is not set and ^D is an
ordinary character. It's only `recognized' as EOF when ICANON is set and
the ^D is typed as the only character on a line.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/