On 27/02/2016 5:46 AM, Christopher Swingley wrote: > udevadm info --query=name --name=/dev/ttyUSB0 --attribute-walk udevadm info --query=name --name=/dev/sdg --attribute-walk Could you do something similar for mdadm RAID [external USB drives] devices? Probably only need the serial number form the output. Thanks AndrewM