backup-rotate.sh

#!/bin/bash

# Array of target directories to backup
TARGETS=("/path/to/first_folder" "/path/to/second_folder" "/path/to/third_folder")

# Destination directory to store the backup
DESTINATION="/path/to/backup_folder"

# Retention period in days
RETENTION_DAYS=7

# Get the current date
CURRENT_DATE=$(date +%Y-%m-%d)

# Loop through the target directories
for TARGET in "${TARGETS[@]}"; do
  # Get the base name of the target directory
  TARGET_NAME=$(basename "$TARGET")
  
  # Create the tar and compress the target directory
  tar -czf "$DESTINATION/${TARGET_NAME}_backup_${CURRENT_DATE}.tar.gz" -C "$(dirname "$TARGET")" "$TARGET_NAME"
done

# Delete files older than the retention period
find "$DESTINATION" -type f -name "*.tar.gz" -mtime +$RETENTION_DAYS -exec rm -f {} \;