Re: NCL and standard in

Thanks to James Correia, Mary Haley, Daryl Herzmann, and Dennis Shea
for all your good suggestions.

Daryl's method (below) was elegant and worked like a charm in c shell.

I had the order of my command line arguments reversed from NCL
recommended ordering, so the following form may be better:

ncl infile=\"filespec\" script.ncl < /dev/null

I would like to suggest that this be added to the NCL command line
documentation page in one or both of these general forms for use
within shell scripts:

ncl script.ncl < /dev/null
ncl [arguments] script.ncl < /dev/null

Thank you!

--Dave

Daryl Herzmann wrote:
> Hi Dave,
>
> My two cents idea would be to run ncl in your bash script like so:
>
> ncl script.ncl infile=\"filespec\" < /dev/null
>
> That should cause ncl to read STDIN from /dev/null instead of what the
> shell script is getting, but I am not positive this will work.
>
> daryl
>
> On Wed, 23 Jul 2008, Mary Haley wrote:
>
>> Dave,
>>
>> What happens if you try:
>>
>> ncl infile=\"filespec\" script.ncl
>>
>> I'm hoping that NCL will see that "script.ncl" and decide that
>> it is done reading input.
>>
>> When it's the other way, however, NCL may be thinking that
>> *everything* after the "script.ncl" is a command line option,
>> and so it reads it all in.
>>
>> --Mary
>>
>> On Tue, 22 Jul 2008, Dave Allured wrote:
>>
>>> Hi. I would like to call an NCL script in batch mode within a loop
>>> in a shell script. The shell script is trying to read input from
>>> standard in (Unix). However, the first time NCL is called, it seems
>>> to grab all of the remaining input from standard in.
>>>
>>> Is there a reasonable way to get NCL to not grab standard in?
>>>
>>> NCL version 5.0.1 pre-release on Mac OS 10.5 PPC. I think I have
>>> seen this before on earlier versions. My invocation of NCL is fairly
>>> normal:
>>>
>>> ncl script.ncl infile=\"filespec\"
>>>
>>> Thank you for any advice.
>>>
>>> Dave Allured
>>> CU/CIRES Climate Diagnostics Center (CDC)
>>> http://cires.colorado.edu/science/centers/cdc/
>>> NOAA/ESRL/PSD, Climate Analysis Branch (CAB)
>>> http://www.cdc.noaa.gov/
>>> _______________________________________________
>>> ncl-talk mailing list
>>> ncl-talk_at_ucar.edu
>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>
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>

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Received on Wed Jul 23 2008 - 14:29:47 MDT