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Reply-To: moss AT cs DOT umass DOT edu
Subject: Re: Bash heredoc on FD 3
To: cygwin AT cygwin DOT com
References: <5c0427c5 DOT 1c69fb81 DOT d71e5 DOT c8ec AT mx DOT google DOT com> <b153a5b5-deea-c039-e93a-0555d8e2dba8 AT gmail DOT com>
From: Eliot Moss <moss AT cs DOT umass DOT edu>
Message-ID: <e3f44d50-04f5-db41-33b4-24fe51f91d34@cs.umass.edu>
Date: Mon, 3 Dec 2018 12:28:18 -0500
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On 12/3/2018 10:43 AM, cyg Simple wrote:

> Same for me and interestingly:
> 
> $ ls -ld /dev/fd/*
> ls: cannot access '/dev/fd/3': No such file or directory
> ls: cannot access '/dev/fd/31': No such file or directory
> lrwxrwxrwx 1 eboyd53 eboyd53 0 Dec  3 10:39 /dev/fd/0 -> /dev/pty2
> lrwxrwxrwx 1 eboyd53 eboyd53 0 Dec  3 10:39 /dev/fd/1 -> /dev/pty2
> lrwxrwxrwx 1 eboyd53 eboyd53 0 Dec  3 10:39 /dev/fd/2 -> /dev/pty2

Every process gets a standard input, output, and error file descriptor.
Other exist only if they're opened.  These are process-specific.

What's mysterious about the reported case is that the 3<< ... did not
seem to create a /dev/fd/3, at least not at the right "time" ...

Regards - Eliot Moss

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