Monitor Disk Space In Linux With Shell Script

Hi.. All..

Monitoring Disk Space In Linux With Shell Script

ADMIN="me@somewher.com"
# set alert level 90% is default
ALERT=90
df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;
do
#echo $output
usep=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
partition=$(echo $output | awk '{ print $2 }' )
if [ $usep -ge $ALERT ]; then
 echo "Running out of space \"$partition ($usep%)\" on $(hostname) as on $(date)" |
  mail -s "Alert: Almost out of disk space $usep" $ADMIN
fi
done

Source : http://bash.cyberciti.biz/monitoring/shell-script-monitor-unix-linux-diskspace/