Hi GNC-A’ers,

The FAZZT Client stores temporary data on an specific directory called “kdt”. While the data is being received, it is stored there, and when the reception is finished, it is moved to the permanent storage directory (e.g.: “GOES-R-CMI-Imagery/Band13”).

However, when, for some reason, there is an error on the reception and the data is incomplete, the temporary file stays there forever. It is a good practice to automatically erase this folder, so your directory does not become full (also, check why incomplete files are happening! Check here).

Let’s see how to clean the kdt directory automatically with cron.

1-) Check where your FAZZT temporary directory is:

On the FAZZT interface, go to “Configuration” -> “Storage Settings” and check the “Temp Directory” and the “Temporat Storage Directory”, like o the image below:

On the example above, the kdt directory is found at: /var/tmp/fazzt/kdt

2-) Create a script called “clean_kdt.sh” (for example) with the following code:

#!/bin/csh -x
echo "****Cleaning FAZZT KDT - Started****"
echo `date`
find /var/tmp/fazzt/kdt -mtime +1 -exec rm -f {} \;
echo `date`
echo "****Cleaning FAZZT KDT - Finished****"

Save the clean_kdt.sh script whenever you want (on this example “/data/scripts”)

3-) Change your script permissions:

chmod +x *

4-) Add the script to your cron, to be executed daily:

To edit your crontab (using vi on this example):

crontab -e

To switch to input mode, in order to add and edit text:

i

You should see — INSERT — on the lower part of the window.

Add a new line to your cron, to execute the “clean_kdt.sh” daily, at midnight:

0 0 * * * /data/scripts/clean_kdt.sh > /data/scripts/clean_kdt.log 2>&1

Pres ESC to quit the crontab edition mode (the — INSERT — text will disappear) and save the edition you made with:

:wq

You will see the following:

crontab: installing new crontab

Your KDT directory will be cleaned daily, at midnight, and the instruction to clear the directory will be looged on /data/scripts/clean_kdt.log