Clean and Safely Eject macOS Volumes

remove_dot.sh

#!/bin/bash
# Utility Script: Clean and Safely Eject macOS Volumes
#
# This script is designed to to remove unnecessary macOS
# system files (e.g., .DS_Store) from USB drives or 
# SD cards and safely eject selected volume
#
# It ensures a clean and clutter-free storage device for
# use on other systems and provides a streamlined process
# for volume management.
#
# Made with ♥ by Andrea Draghetti
#
# This file may be licensed under the terms of of the
# GNU General Public License Version 3 (the ``GPL'').
#

# Display currently mounted volumes
echo "Mounted volumes:"
for volume in /Volumes/*; do
    echo " - $(basename "$volume")"
done

printf "\nEnter the name of the USB/SD volume (e.g., SD): "
read -r volumename

# Check if a volume name was provided
if [ -z "$volumename" ]; then
    # If the input is empty, exit with an error
    echo "Error: No volume name provided. Exiting."
    exit 1
fi

# Check if the volume exists
if df | grep -iw "$volumename" > /dev/null; then
    # If the volume exists, proceed with cleaning
    echo "Cleaning unnecessary macOS files in \"/Volumes/$volumename\"..."
    
    # Run `dot_clean` to remove unnecessary files and check if it succeeds
    if sudo dot_clean /Volumes/"$volumename"; then
        echo "Cleaning completed successfully."
    else
        # If `dot_clean` fails, inform the user and exit with an error
        echo "Error while cleaning the volume."
        exit 1
    fi

    # Safely eject the volume
    echo "Ejecting the volume..."
    if sudo diskutil eject /Volumes/"$volumename"; then
        # If the ejection succeeds, inform the user
        echo "Volume successfully ejected!"
    else
        # If ejection fails, inform the user and exit with an error
        echo "Error while ejecting the volume."
        exit 1
    fi

    # Inform the user that the operation was successful and exit
    echo "Operation completed successfully!"
    exit 0
else
    # If the volume does not exist, inform the user and exit with an error
    echo "Error: No volume found with the name \"$volumename\". Exiting."
    exit 1
fi