How to do array operation in busybox

[Pratik Prajapati]

Thanks. Your solution is very useful.

On Fri, Jun 26, 2015 at 12:01 PM, Sven-Göran Bergh <
sgb-list+busybox at systemaxion.se> wrote:

> On 06/26/2015 07:59 AM, Pratik Prajapati wrote:
>
>> I tried one method and was unable to correct it. Can you give me the
>> correct method ?
>>
>> On Fri, Jun 26, 2015 at 11:25 AM, Sven-Göran Bergh
>> <sgb-list+busybox at systemaxion.se
>> <mailto:sgb-list+busybox at systemaxion.se>> wrote:
>>
>>     Hi Patrik
>>
>>     On 06/26/2015 07:49 AM, Pratik Prajapati wrote:
>>
>>         Hi,
>>
>>         I am working on LTP-DDT project (
>> https://github.com/rogerq/ltp-ddt)
>>         which i cross-compiled for my target and my target uses busybox.
>> But
>>         running it on my target gives me error as array operation is not
>>         supported in busybox.
>>
>>         I have attached script with this mail.
>>
>>         I am getting error for :
>>
>>         sh: /opt/ltp/testcases/bin/ddt/common/common.sh: line 305:
>>         syntax error:
>>         bad substitution
>>
>>         I tried this:
>>
>>         |305: shift
>>         306: index=0
>>         307: for  arg;
>>         308: do
>>         309:   x[$index]=$arg
>>         310:   ((index++))
>>         311: done
>>
>
> I am afraid that the work around is quite ugly. In this case
> you may use the evil eval:
>
> index=0
> for arg;
> do
>         eval x${index}=$arg
>         eval printf "x%s:\\\t%s\\\n" "${index}" "\$x${index}"
>         ((index++))
> done
>
> Yes, I know it is ugly and I said so.
> Arrays are one of the things I miss the most in ash.
>
> Brgds
> /S-G
>
>
>          |but i got error:|  syntax error: unexpected "(" (expecting "}")
>>
>>         Also couldn't found any solution on google.
>>
>>         How to make it work on busybox. Please help.
>>
>>
>>     Arrays is a bash feature, it is not supported by ash or standard
>>     shells. So unfortunately the short answer is that it does not work.
>>     However there are often ways to rework a script to avoid arrays.
>>
>>     Brgds
>>     /S-G
>>
>>
>>         Thanks,
>>
>>         Pratik
>>
>>
>>
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>>
>>
>>
>
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