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Re: Process Substitution backgrounds the command list?
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From: |
Chet Ramey |
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Subject: |
Re: Process Substitution backgrounds the command list? |
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Date: |
Thu, 13 Sep 2007 22:15:51 -0400 |
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User-agent: |
Thunderbird 2.0.0.6 (Macintosh/20070728) |
Bob Proulx wrote:
> I am confused by the order of operations of this following:
>
> $ { echo hello world | tee >(md5sum 1>&2) ;} ; echo goodbye
> hello world
> goodbye
> $ 6f5902ac237024bdd0c176cb93063dc4 -
>
> Shouldn't bash wait for the subprocess finish before the next command
> is invoked? I did not expect the >(list) to continue to run in the
> background after the entire pipeline returned.
>
> Is there a way to explicitly wait for that process in order to
> synchronize subsequent operations?
No, there's no way to wait for it.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
Live Strong. No day but today.
Chet Ramey, ITS, CWRU chet@case.edu http://cnswww.cns.cwru.edu/~chet/