Monitors and logs disk usage trends into a CSV file.

storage-logger.sh

#!/bin/bash

#
# Monitors and logs disk usage trends into a CSV file.
# Output is converted from KB to GB for better readability.
#
# Ideal for tracking long-term storage growth in VPS environments.
#

LOG_FILE="$HOME/storage-logger.csv"

if [ ! -f $LOG_FILE ]; then
    echo "Date,Total (GB),Used (GB),Available (GB),Percentage" > $LOG_FILE
fi

STATS=$(df -k / | tail -1 | awk '{printf "%.2f,%.2f,%.2f,%s", $2/1024/1024, $3/1024/1024, $4/1024/1024, $5}')
DATE=$(date '+%Y-%m-%d %H:%M')
echo "$DATE,$STATS" >> $LOG_FILE
exit