ICMP (the default, so -I not needed)
$ traceroute -I www.microsoft.com
UDP
# traceroute -U www.microsoft.com
TCP
# traceroute -T -p 80 www.microsoft.com
$ traceroute -I www.microsoft.com
# traceroute -U www.microsoft.com
# traceroute -T -p 80 www.microsoft.com
udevadm info --attribute-walk --name=/dev/sda