[CentOS] Question about Shell Script.

Semih Gokalp semihgokalp at gmail.com
Sat Jan 31 18:35:27 UTC 2009


Thanks for all reply.

it works with $()

Thanks again everbody.


2009/1/30 William L. Maltby <CentOS4Bill at triad.rr.com>:
>
> On Fri, 2009-01-30 at 15:56 -0500, Filipe Brandenburger wrote:
>> On Fri, Jan 30, 2009 at 13:59, R P Herrold <herrold at centos.org> wrote:
>> > or for those who are used to being burned:
>> >      [ 0$NUMBEROFPRO -gt 150 ]
>>
>> Still going to explode if $NUMBEROFPRO contains spaces. Putting in
>> double quotes will not help you either, since it will complain about
>> it not being numeric...
>
> That taught me long ago, if input was inconsistent, to check for
> non-numerics before doing math. Back then, it was the expr command
> (still available I think). Now it's some of those builtins accessed with
> ${} constructs. Expr is simpler, shorter to code and reliable.
>
>>
>> Doing math with the shell is always tricky, almost never robust...
>>
>> Filipe
>> <snip sig stuff>
>
> --
> Bill


-- 
Iyi calismalar.Basarilar...
Semih Gokalp
Istanbul/Turkiye


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