On 4/13/12 8:50 PM, Linda Walsh wrote:
>
>
> Chet Ramey wrote:
>
>> This is intended. Bash doesn't allow a local copy of a variable to
>> override a readonly global one. This can be a potential security hole,
>
> ---
> You can look at it that way, but it also hinders modular programming.
>
> If I declare a variable to be local, I wouldn't expect it to fail and
> be overridden by some global namespace pollution.
If I declare a variable readonly at global scope, I wouldn't expect it
to be overridden by some local namespace pollution.
> It is overridable, but not easily.
Yes, it is.
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
