[clue] bash/using variables in variable names

[Mike Bean]

I'm trying to efficiently get data out of csv sheets and compare it against
other variables.  Since it's arranged according to row, after I read
Raymond's message,  I played around with sed'ing individual lines directly
in an array.  Had more luck then I did with columns actually, so at the
moment, it's the best bet.  Going to attack it again on monday.


On Fri, Jun 21, 2013 at 4:47 PM, Quentin Hartman <qhartman at gmail.com> wrote:

> Depending on what your purpose for the this script is be aware that arrays
> are a fairly new GNU bash-ism, so if you use them your script may not be
> portable to other *sh shells that only do POSIX compliance. One relevant
> example is dash, which was (and I believe still is) the default invoked by
> "sh" on Ubuntu machines.
>
> QH
>
>
> On Fri, Jun 21, 2013 at 3:26 PM, Mike Bean <beandaemon at gmail.com> wrote:
>
>> Would export work in a script?   Huh...  Arrays make some intuitive
>> sense.  Why is it these projects are never as simple as you think they're
>> going to be when you start them?
>>
>> Mike Bean
>>
>>
>> On Fri, Jun 21, 2013 at 3:09 PM, Raymond DeRoo <rderoo at deroo.net> wrote:
>>
>>> Mike:
>>>
>>> export is your friend.
>>>
>>> OK, I am just thoroughly writer's blocked, probably missing something
>>> obvious; but who knows.  Anyway, here's my question
>>>
>>> # node=somenode
>>> # echo $node
>>> somenode
>>> # somenodeVar=5  * // if this works*
>>> # echo $somenodeVar
>>> 5
>>> # $node"Var"=5 *// why doesn't this work?*
>>> bash: somenodeVar=5: command not found
>>>
>>>
>>> [16:06:18 rderoo at daggoo ~]$ node=somenode
>>> [16:07:03 rderoo at daggoo ~]$ echo $node
>>> somenode
>>> [16:07:49 rderoo at daggoo ~]$ export "${node}Var"=5
>>> [16:07:57 rderoo at daggoo ~]$ echo $somenodeVar;
>>> 5
>>> [16:07:58 rderoo at daggoo ~]$ echo $somenodeVar;
>>>
>>>
>>> For the time being well skip the discussion on why variable variables
>>> are bad and that one should really be using arrays...
>>>
>>> Kind Regards,
>>> Raymond
>>>
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>>
>>
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