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Re: bash sockets: printf \x0a does TCP fragmentation

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  Re: bash sockets: printf \x0a does TCP fragmentation Chet Ramey <chet.ramey@case.edu> - 2018-09-26 10:00 -0400

#14666 — Re: bash sockets: printf \x0a does TCP fragmentation

On 9/26/18 2:17 AM, Dirk Wetter wrote:

>> then what happens if "$data" is
>> a paragraph of text with embedded newlines.  In that case,
>> it sounds like bash might break apart the single printf
>> output into smaller packets rather than transmitting the
>> entirety of "$data" in 1 write (presuming it is less than
>> the maximum data size for a network packet).
> 
> yup.
> 
> Wonder why the coreutils printf behaves (in my sense) better
> than the bash-builtin.

The answer's the same as it was last week: because bash line-buffers
stdout and stderr, which it has done since early 1992.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
		 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/

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