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##   MACINTOSH HELPERS
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#### On Ubuntu, format a flash drive for use on Macintosh

apt-get install hfsprogs

Insert USB into slot
List Block devices to get device name and list current mount state
   use the -f switch to get information about current file system type
   
lsblk -f
    device  filesystem  label       AvailableSpace  %used  mountpoint
	sdc1    vfat        Untitled    7.4G             0%    /media/user/Untitled
		
Since /dev/sdc1 is mounted, first unmount it with the umnount command

sudo umount /media/user/Untitled

Then format
sudo mkfs.hfsplus  /dev/sdc1	



#### On Ubuntu, mount a USB flash drive Read/Write

apt-get install hfsprogs
mkdir -p /media/USB
dmesg ( to find device name for USB - like /dev/sdc1 )
(might need to unmount it first using umount command if it mounted automtically)
mount -t hfsplus -o force,rw /dev/sdc1 /media/USB