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Batch Processing With Grass63
How to do batch processing with Grass 6.3
Note, the information here was obtained from http://grass.osgeo.org/wiki/GRASS_and_Shell
Create a file with only grass valid commands. In this example, I'll call it myprocess.sh
Next, set the permissions on the file to be executable:
chmod u+x myprocess.sh
Now, we need to set the environment variable GRASS_BATCH_JOBto point to this file.
For bash, this would be done via this way:
export GRASS_BATCH_JOB=`pwd`/myprocess.sh
and for CSH, it would be
setenv GRASS_BATCH_JOB `pwd`/myprocess.sh
Next, you will need to know the location of the both the Project and MAPSET you want to work with. So, say the Project is stmartin and the mapset is PERMANENT. The Project is stored in directory /joy/grassdata. Then, the full path to the mapset is /joy/grassdata/stmartin/PERMANENT.
So, to run the batch command, you need to type this:
grass63 /joy/grassdata/stmartin/PERMANENT
GRASS is invoked. If there are no errors, it runs through all the commands and then exits.
Afterwards, you need to unset the GRASS_BACTH_JOB variable - otherwise, anytime you type grass63, it will try to run grass in batch mode.
To unset in BASH, type
unset GRASS_BATCH_JOB
In CVS, type
unsetenv GRASS_BATCH_JOB
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