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List:       bash-bug
Subject:    Re: exec redirection is undone if fd (>9) has O_CLOEXEC
From:       Chet Ramey <chet.ramey () case ! edu>
Date:       2024-02-26 22:20:29
Message-ID: 432dd658-a4b9-434b-b1a4-a8c293116d09 () case ! edu
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On 2/24/24 5:40 AM, Koichi Murase wrote:

> Meanwhile, the behavior that `exec 50>2.txt' does not have an effect
> does not seem to be the intentional design.  It seems to be just a
> side effect of the manipulation of the saved fds.  In this sense, the
> strange behavior I observe is the one that Chet did not primarily
> intend, I guess.  But it's just my naive guess.

Manipulating the close-on-exec flag is not something the shell allows the
user to do out of the box. If you want to use something like a loadable
builtin to change that, strange things might happen.

-- 
``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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