Email alert when hard disk is full in linux

         

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Step 1: Create a bash script file

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nano /opt/diskspacealert.sh

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Step 2 : paste the below script

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#!/bin/sh

# refered https://www.cyberciti.biz/tips/shell-script-to-watch-the-disk-space.html

# enter your mailed below for email alert

ADMIN="admin123@gmail.com"

# set alert level 90% is default

ALERT=90

df -HP | grep -vE '^Filesystem|tmpfs|cdrom' |

  while read partition size used free perc mnt ;

  do

    usep=$(echo $perc | tr -d '%' )

    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

Note *** change the admin123@gmail.com  to your mail id to which you want email alert

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Step 3 : make the script executable

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chmod 755 /opt/diskspacealert.sh

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Step 4 : scheduling the scrip to run every day 

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type  crontab -e  in the linux shell

then add the below line

0 10 * * * /opt/diskspacealert.sh

this will run the script every day 10 am

Note : ***

you must have installed and configured 

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