Message-ID: <465CEFC9.3030107@cygwin.com>
Date: Tue, 29 May 2007 23:30:17 -0400
From: "Larry Hall (Cygwin)" <reply-to-list-only-lh AT cygwin DOT com>
Reply-To: cygwin AT cygwin DOT com
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To: cygwin AT cygwin DOT com
Subject: Re: more on Re: bash process substitution "<(list)" [spot the difference]
References: <465CE9DE DOT 4030907 AT alumni DOT rice DOT edu>
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B. K. Oxley (binkley) wrote:
> I am exploring how process substitution works on Cygwin.  I have scripts
> which run fine on Linux but not on Windows XP.
> 
> Why does one of these scripts produce an error and the other does not?
> 
> Script #1:
> 
> $ cat a
> #!/bin/bash
> 
> function f()
> {
>    echo "$1"
>    cat "$1"
> }
> 
> f <(echo OK)
> 
> $ ./a
> /proc/self/fd/63
> OK
> 
> Script #2:
> 
> $ cat b
> #!/bin/bash
> 
> function f()
> {
>    ls -l "$1"
>    cat "$1"
> }
> 
> f <(echo OK)
> 
> $ ./b
> lrwxrwxrwx 1 luser None 0 May 29 15:49 /proc/self/fd/63 -> pipe:[1728]
> cat: /proc/self/fd/63: No such file or directory

With the exception of a slight bit of file name conversion, I get the same
result as you do with Cygwin when I run on Linux (FC4):

# /tmp/a
/dev/fd/63
OK

#  /tmp/b
lr-x------  1 lhall lhall 64 May 29 23:26 /dev/fd/63 -> pipe:[916212]
cat: /dev/fd/63: No such file or directory

This is using your scripts verbatim.

-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

_____________________________________________________________________

A: Yes.
> Q: Are you sure?
>> A: Because it reverses the logical flow of conversation.
>>> Q: Why is top posting annoying in email?

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