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Re: pipe with list seems to clobber variables
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From: |
Chet Ramey |
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Subject: |
Re: pipe with list seems to clobber variables |
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Date: |
Wed, 20 Dec 2000 10:29:56 -0500 |
> Machine Type: i686-pc-cygwin
>
> Bash Version: 2.04
> Patch Level: 0
> Release Status: release
>
> Description:
>
> if I have a list of commands, and there's a pipe anywhere in there,
> any variables set in the list seem to get erased.
Each element of a pipeline is run in a separate process, not the calling
shell. A subprocess cannot affect its parent's environment.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet)
Chet Ramey, CWRU chet@po.CWRU.Edu http://cnswww.cns.cwru.edu/~chet/