I think you want:
mpirun -np 6 ./laplace < HERE | tail -n 1 > output
You can add brackets to make it clearer:
((mpirun -np 6 ./laplace < HERE) | tail -n 1) > output
Hope this helps?
Benjie.
On 16 May 2011 17:35, Robin Wilson <robin@???> wrote:
> Hi all,
>
> I have the following code in a batch script:
>
> mpirun -np 6 ./laplace <<END
> 100
> 100
> 100
> 0.01
> 100
> 3
> 2
> 1
> END
> | tail -n 1 > output
>
> What I want it to do is to use the HERE file as input to the mpirun
> command, and then pipe the output of the mpirun command to the tail
> command. However, I think the HERE file and tail output things are getting
> confused.
>
> Any ideas on how should I write this so that it does what I want?
>
> Cheers,
>
> Robin
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