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Re: coprocess questions (manpage doesn't seem clear)
From: |
Chet Ramey |
Subject: |
Re: coprocess questions (manpage doesn't seem clear) |
Date: |
Tue, 12 Apr 2011 09:32:02 -0400 |
User-agent: |
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 |
On 4/11/11 3:52 PM, Linda Walsh wrote:
> I was looking @ coprocess section in the manpage where it says that:
>
> NAME must not be supplied if command is a simple command.
> For the coproc:
> FH1(stdout) is put in NAME[0]
> FH0(stdin) is put in NAME[1]
> PID is put in NAME_PID
>
> Questions (Seems like these should be in manpage, in this section, or
> has this already been revised?):
>
> 1) If Name isn't supplied, where does it put the handles & Pid?
The default name is COPROC.
> 2) Where does it put FH2 (stderr)?
It does not modify stderr, just as pipes do not.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/