Improving the Disk Alert BASH Script

A few days ago, I shared the BASH script to alert the high usage of Disk at server. I am slightly adding a usage in GB so that you know the exact amount of HDD apart from the disk percentage.

#!/bin/bash

usage=`df -h / | tail -1 | awk '{print $5}'`
usage=${usage%?}
remaining=`df -h / | tail -1 | awk '{print $4}'`

threshold=95

if [[ $usage -gt $threshold ]]; then
    echo "Diskspace: $usage% (Remaining $remaining) Exceeding $threshold%"
    php /var/www/mail.php "Your Server $(echo $HOSTNAME) Diskspace: $usage% (Remaining $remaining) Exceeding $threshold% $(date)"
    exit 1
else
    echo "Diskspace: $usage% - Remaining $remaining"
    exit 0
fi

See this post

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