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Re: exit from a piped while read does not exit program but function
From: |
Chet Ramey |
Subject: |
Re: exit from a piped while read does not exit program but function |
Date: |
Thu, 7 Mar 2002 09:04:02 -0500 |
> Machine Type: i586-pc-linux-gnu
>
> Bash Version: 2.05a
> Patch Level: 0
> Release Status: release
>
> Description:
> [Detailed description of the problem, suggestion, or complaint.]
>
> I have a test program below that reads a file in a function and if an error
> occurs it is supposed to
> exit the program.
>
> However, as you can see from this simple program it does not exit.
>
> Am I missing the purpose or function of the exit statement?
You are missing the fact that each element of a pipeline is run in a
subshell. The `exit' exits the subshell, not the calling program.
--
``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/