Convert IMA floppy disk image to IMG disk image

IMA2IMG.sh

#!/bin/bash

# Use at your own risk.
# chmod +x IMA2IMG.sh before using.

echo -e "IMA2IMG by av1d"
echo -e "Convert IMA floppy disk image to IMG disk image\n"
echo -e "Also mounts the IMA file in /mnt/floppyIMAdisk for usage"
echo -e "https://gist.github.com/av1d/e27e72795507e1bd29d92172d76e56f5"

if [[ "$1" == "unmount" ]]
then
  echo "Unmounting /mnt/floppyIMAdisk"
  sudo umount /mnt/floppyIMAdisk
  echo "Done."
  echo "Attempting to detach loop device /dev/loop234789"
  losetup -d /dev/loop234789
  losetup -a
  echo "Done."
  exit
elif [[ "$1" == "--help" || "$1" == "-h" ]]
then
  echo "IMA2IMG - run as root."
  echo "Usage example: ./IMA2IMG.sh OriginalDisk.IMA ConvertedDisk.IMG unmount"
  echo "unmount command is optional. You can unmount and detach loop device afterwards by typing:"
  echo "./IMA2IMG unmount"
  exit
elif [[ -z "$1" ]]
then
  echo "Please specify the IMA file. Type ./IMA2IMG.sh --help for help."
  exit
fi

if [[ -z "$2" ]]
then
  echo "Please specify the destination IMG file. Type ./IMA2IMG.sh --help for help."
  exit
fi

echo "Creating folder in /mnt/floppyIMAdisk ..."
sudo mkdir /mnt/floppyIMAdisk
echo "associating loop device /dev/loop234789 with file \$1"
sudo losetup /dev/loop234789 ./$1
echo "mounting /dev/loop234789 as a vfat partition at /mnt/floppyIMAdisk"
sudo mount -t vfat /dev/loop234789 /mnt/floppyIMAdisk
echo "Creating IMG file"
sudo dd bs=512 count=2880 if=/dev/loop234789 of=$2
echo -e "Done."

if [[ "$3" == "unmount" ]]
then
  echo "Unmounting /mnt/floppyIMAdisk"
  sudo umount /mnt/floppyIMAdisk
  echo "Done."
  echo "Attempting to detach loop device /dev/loop234789"
  losetup -d /dev/loop234789
  losetup -a
  echo "Done."
  exit
fi

echo -e "Type ./IMA2IMG.sh unmount to unmount /mnt/floppyIMAdisk and detach loop device"