[gradsusr] get output from shell command

[Arlindo da Silva]

On Thu, Mar 17, 2011 at 5:20 AM, Becker, Bernd <
bernd.becker at metoffice.gov.uk> wrote:

>
>
> Chuck,
> nice solution,
> but if you have 17 grads shells running in parallel, eventually
> one of them may overwrite sysdate.dat and that would be bad.
>
>
If you are using an opengrads release you can use the environment expansion
capability, and the the process ID variable $$, to create unique (per grads
instance) temporay files. For this particular example, try:


'@ !date > sysdate.dat.$$'
filename = subwrd(result,3)
 d = read(filename)
 d1 = sublin(d,2)
 say d1

The Env extension adds a lot of convenient environment variable
functionality to GrADS. See this for more information:

        http://opengrads.org/doc/udxt/env/

   Arlindo

-- 
Arlindo da Silva
dasilva at alum.mit.edu
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