Disk monitoring script that will alert you when one of your disks has little space left

disk-monitor.sh

#!/bin/bash

# Add this script as a cronjob
# Append the following line to your cronjob file (open cronjob file with `crontab -e`):
# @daily /path/to/disk-monitor.sh

SIMPLEPUSH_KEY=YourKey
THRESHOLD=90

df -H | grep -vE '^Filesystem|tmpfs|cdrom' | awk '{ print $5 " " $1 }' | while read line;
do
  percentage=$(echo $line | awk '{ print $1}' | cut -d'%' -f1  )
  disk=$(echo $line | awk '{ print $2 }' )
  if [ $percentage -ge $THRESHOLD ]; then
    curl --silent --output /dev/null --data "key=$SIMPLEPUSH_KEY&title=$disk&msg=Disk usage at $percentage%!" https://api.simplepush.io/send
  fi
done