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Re: [vox-tech] ksh question
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Re: [vox-tech] ksh question



Sorry Jeff, You weren't talking to yourself, I wasn't around this weekend

To continue your example:

$ var=value
$ ref=var
$ echo ${!ref}
value
$ var=newvalue
echo ${!ref}
??????

I don't have bash at work so I can't determine what the output is of the
above.  I'm running ksh on an HP, and the ${!ref} doesn't work

Thanks
Jay


----- Original Message -----
From: "Jeff Newmiller" <jdnewmil@dcn.davis.ca.us>
To: "vox-tech" <vox-tech@lists.lugod.org>
Sent: Saturday, January 26, 2002 10:49 PM
Subject: Re: [vox-tech] ksh question


> Sorry to carry on a conversation with myself, but I said...
>
> On Sat, 26 Jan 2002, Jeff Newmiller wrote:
>
> [...]
>
> > In bash, you can do:
> >
> >   $ var=value
> >   $ ref=var
> >   $ echo ${!ref}
> >   value
> >
> > but unfortunately, you cannot do
> >
> >   $ ${!ref}=anothervalue
>
> and after experimenting further, I find that the effect can be obtained
> with:
>
>   $ eval $ref=other
>   $ echo $var
>   other
>
> This is still more like a pointer in C than a reference in C++.
>
> --------------------------------------------------------------------------
-
> Jeff Newmiller                        The     .....       .....  Go
Live...
> DCN:<jdnewmil@dcn.davis.ca.us>        Basics: ##.#.       ##.#.  Live
Go...
>                                       Live:   OO#.. Dead: OO#..  Playing
> Research Engineer (Solar/Batteries            O.O#.       #.O#.  with
> /Software/Embedded Controllers)               .OO#.       .OO#.
rocks...2k
> --------------------------------------------------------------------------
-
>
> _______________________________________________
> vox-tech mailing list
> vox-tech@lists.lugod.org
> http://lists.lugod.org/mailman/listinfo/vox-tech


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