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Re: bash sockets: printf \x0a does TCP fragmentation

From: Chet Ramey
Subject: Re: bash sockets: printf \x0a does TCP fragmentation
Date: Tue, 25 Sep 2018 09:46:55 -0400
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On 9/25/18 9:04 AM, address@hidden wrote:

> FYI: I ended up checking with type before whether an external printf
> exists and set a variable for this and then just call this variable.
> env or exec: never thought about it (thanks!) but as both are external
> commands, that would mean upon every call one additional external program.
> (yes, I know that there is such thing as a fs buffer). Subshells also costs
> resources. As this is a core function I am happy for every homeopathic dose
> of time I safe here :-)

`exec' is a shell builtin. It will `cost' in terms of a fork, but you're
going to fork and exec a different program anyway -- /usr/bin/printf --
so it's basically a wash. In either case, there's one fork and one

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

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