Backup a Directory with Timestamp and Retention

#!/bin/bash

# --- Configuration ---
BACKUP_DIR="/path/to/your/website"
DEST_DIR="/path/to/backup/storage"
RETENTION_DAYS=7 # Keep backups for 7 days

# --- Script Logic ---

# Create destination directory if it doesn't exist
mkdir -p "$DEST_DIR"

# Generate timestamp for the backup file
TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
BACKUP_FILENAME="website_backup_${TIMESTAMP}.tar.gz"

echo "Starting backup of $BACKUP_DIR to $DEST_DIR/$BACKUP_FILENAME"

# Create the gzipped tar archive
tar -czf "$DEST_DIR/$BACKUP_FILENAME" -C "$(dirname "$BACKUP_DIR")" "$(basename "$BACKUP_DIR")"

if [ $? -eq 0 ]; then
  echo "Backup created successfully: $BACKUP_FILENAME"
else
  echo "Error creating backup." >&2
  exit 1
fi

# Clean up old backups based on retention policy
echo "Cleaning up old backups (older than $RETENTION_DAYS days) in $DEST_DIR..."
find "$DEST_DIR" -name "website_backup_*.tar.gz" -type f -mtime +$RETENTION_DAYS -delete

if [ $? -eq 0 ]; then
  echo "Old backups cleaned up successfully."
else
  echo "Error cleaning up old backups." >&2
fi

echo "Backup script finished."