Re: fd redirection behaves strangely on OSX

[Chet Ramey]

George Huo wrote:

> - A description of the bug behaviour.
> While trying to use fd redirection, I seem to run into lingering bad fds that 
> I
> need to exhaust with subsequent commands. See example below. I can't reproduce
> the behaviour on a Linux machine running the same version of bash.

When something like this happens, it's almost always due to a race
condition.  In this case, it's probably that the read end of the pipe
has been closed or does not exist when cat tries to fstat it.  I've
spent quite a while looking for the race condition, but haven't found
it yet.

Chet

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Chet Ramey, ITS, CWRU    chet@case.edu    http://cnswww.cns.cwru.edu/~chet/