$ curl cheat.sh/
# findfs
# Finds a filesystem by label or UUID.
# More information: <https://mirrors.edge.kernel.org/pub/linux/utils/util-linux>.

# Search block devices by filesystem label:
findfs LABEL=label

# Search by filesystem UUID:
findfs UUID=uuid

# Search by partition label (GPT or MAC partition table):
findfs PARTLABEL=partition_label

# Search by partition UUID (GPT partition table only):
findfs PARTUUID=partition_uuid

$
Follow @igor_chubin cheat.sh tldr