Input environment variable into script to run different values automatically

Question

In-chan Kim 2020-5-27

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/535413-input-environment-variable-into-script-to-run-different-values-automatically

回答： Image Analyst 2020-5-27

Hi, I'm running a matlab script on a different server, and I want it to automatically input a value into a script, so that I can run it once, and have different versions of the scrips running independently.

I know that if I use something called an environment variable, it will work, I just don't know how!

From the server side of things:

#PBS -J 1-5

matlab -nodesktop -nosplash -nodisplay < RunHPC_parallel${PBS_ARRAY_INDEX}s.m

And that will make it

RunHPC_parallel1s.m, RunHPC_parallel2s.m ... RunHPC_parallel5s.m

I need to be able to make the J feed into my script and adjust a value within my script.

Specifically, the J in

formparams=form2params(J,:);

I think it's something to do with this: ${PBS_ARRAY_INDEX}

But not sure how!

Thanks!

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Answer 1

Image Analyst 2020-5-27

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/535413-input-environment-variable-into-script-to-run-different-values-automatically#answer_440233

You can get the environment variable inside your program with getenv().

Description

example

value = getenv(name) searches the operating system environment variable list for text of the formname=value.

On UNIX® platforms, the shell you use to start MATLAB® determines the operating system environment. For example, starting MATLAB on a Mac platform from the Applications folder creates a different shell environment from starting MATLAB from Terminal.