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Re: unsetting non existent variables


From: Chet Ramey
Subject: Re: unsetting non existent variables
Date: Tue, 1 Jun 2004 12:28:30 -0400

> $ man bash
>        unset [-fv] [name ...]
>             ...  The exit status is true unless a name does not exist or is 
> readonly.
> 
> $ set|grep mmm
> $ unset mmm; echo $?
> 0
> 
> mmm didn't exist, but the exit status was still true.
> 
> Actually, I'd rather you change the man page so that unsetting non
> existent variables is not an error, else many of my bash -e scripts
> will fail.

I changed the man page a while back to remove the case where
the name does not exist.

-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
( ``Discere est Dolere'' -- chet )
                                                Live...Laugh...Love
Chet Ramey, ITS, CWRU    address@hidden    http://tiswww.tis.cwru.edu/~chet/




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