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20030303: Gempak Scripts

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  • Subject: 20030303: Gempak Scripts
  • Date: Mon, 3 Mar 2003 10:17:43 -0700 (MST)
Jim,

When running your scripts from cron, I'd suggest creating a unique
working directory to ensure that you don't have multiple copies of
scripts working in the same place....which also makes debugging easier
since you won't have other scripts stepping on your debug infomation.

Typically, you can use the process ID like:
set WORK=/tmp/gemwrk.$$
mkdir $WORK
cd $WORK
.....script stuff....
cd /tmp
rm -rf $WORK

I'd suggest looking to see if you have any gplt's hanging around and
check the "ipcs" output. Your problem could be as simple as the script executing
from
cron not being able to change to the expected directory, or more than one
program writing to the gemglb.nts file and changing your expected input.

Steve Chiswell
Unidata User Support


On Mon, 3 Mar 2003, Jim St. John wrote:

> I have several GEMPAK scripts that I use to prepare products for my students
> to use in class, and also for some input to air quality research.  I call
> them hourly or twice daily from cron jobs.  They've worked fine for years on
> several different platforms.  Right now they're running on a Sun running
> SunOS8.  All of a sudden on Friday I started having problems with variables
> in the scripts such as GAREA, DEV, DATTIM etc. being overwritten.  When I
> run the scripts from the prompt or run them as "at" jobs they run fine, but
> when I run them as "cron" I have the problem.  Has anyone run into a similar
> problem?
>
> *************************************************
> *  Dr.  James C. St. John
> *  School of Earth and Atmospheric Sciences
> *  Georgia Institute of Technology
> *  1254 Ford Motor Co. ES&T Building
> *  Atlanta GA 30332-0340
> *  Phone:    404-894-1754
> *  Fax:        404-894-5638
> *  E-Mail:   address@hidden
>
>
>