Here is a general purpose script I have provided to another similar question. SInce I do not know what your case is, I am providing the script as is. It is pretty easy to understand and you can make modifications as you wish. This script will alert you (using any method you like by replacing echo statements) when the filesystem utilization reaches a warning level and a critical level.
Hope this helps... Script follows:
#!/bin/bash
df | grep ^"/" > /tmp/filesystem_names
for fs in `cat /tmp/filesystem_names`
do
df $fs > /tmp/currFS
ln=`cat /tmp/currFS |grep -v ^Filesystem| wc -l`
case $ln in
2) perctg=`tail -1 /tmp/currFS|awk {'print $4'}|cut -d"%" -f1` ;;
1) perctg=`tail -1 /tmp/currFS|awk {'print $5'}|cut -d"%" -f1` ;;
*) echo "There was an error with volume ${fs}. Check manually" ;;
esac
if [ $perctg -ge 80 ] && [ $perctg -lt 90 ]
then
echo "replace this line with your WARNING action for volume $fs"
fi
if [ $perctg -ge 90 ]
then
echo "replace this line with your CRITICAL action for volume $fs"
fi
done
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UNIX because I majored in cryptology...
