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Re: Variable scope problem in nested loops?
From: |
Chet Ramey |
Subject: |
Re: Variable scope problem in nested loops? |
Date: |
Wed, 15 Sep 2004 13:56:10 -0400 |
> Machine Type: i686-pc-linux-gnu
>
> Bash Version: 3.0
> Patch Level: 0
> Release Status: release
>
> -----------------------------------------------------------------------
>
> Description:
> I can set or change the value of a variable inside a for loop which
> is in turn inside a while loop, but the changes are lost when accessing =
> the
> variable after outside the loops. See script below.
Each element of a pipeline is run in a separate subshell. The answer to
question E4 in the bash FAQ explains this in more detail.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
Live...Laugh...Love
Chet Ramey, ITS, CWRU chet@po.cwru.edu http://tiswww.tis.cwru.edu/~chet/