M1ke/disk-usage-alert.sh

## readme.md

      
    Raw
  

              readme.md
            
          
    Disk Usage Alerter

Install mailutils with:
sudo apt-get install mailutils

Set up the cronjob with:
crontab -e

To send at 10 mins past the hour add:
10 * * * * sh /path/to/script

If you'll be emailing the same domain that your mailname is set to:
Navigate to /etc/postfix/
sudo vi main.cf

Find line beginning mydestination, it should say something like:
mydestination =  ubuntu, localhost.localdomain, localhost

Crucially it shouldn't contain your mailname or references to it, or your emails will be sent internally on the server.

  
## disk-usage-alert.sh
#!/bin/sh
df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read output;
do
  echo $output
  used=$(echo $output | awk '{ print $1}' | cut -d'%' -f1  )
  partition=$(echo $output | awk '{ print $2 }' )
  if [ $usep -ge 80 ]; then
    echo "The partition \"$partition\" on $(hostname) has used $used% at $(date)" | mail -s "Disk space alert: $used% used" your@email.com
  fi
done
	#!/bin/sh
	df -H \| grep -vE '^Filesystem\|tmpfs\|cdrom' \| awk '{ print $5 " " $1 }' \| while read output;
	do
	echo $output
	used=$(echo $output \| awk '{ print $1}' \| cut -d'%' -f1 )
	partition=$(echo $output \| awk '{ print $2 }' )
	if [ $usep -ge 80 ]; then
	echo "The partition \"$partition\" on $(hostname) has used $used% at $(date)" \| mail -s "Disk space alert: $used% used" your@email.com
	fi
	done