root@sw:/home/zack# lsusb
Bus 2 Device 1: ID 0000:0000
Bus 3 Device 1: ID 0000:0000
Bus 5 Device 1: ID 0000:0000
Bus 4 Device 1: ID 0000:0000
Bus 1 Device 6: ID 04a9:314e Canon, Inc.
Bus 1 Device 1: ID 0000:0000
Bus 1 Device 2: ID 0ac8:c002 Z-Star Microelectronics Corp.
root@sw:/home/zack#
zack@sw:~$ udevtest `udevinfo -q path -n /dev/usbdev1.6`
main: looking at device '/class/usb_device/usbdev1.6' from subsystem 'usb_device'
run_program: '/bin/sh -c 'X=usbdev1.6 X=${X#usbdev}; B=${X%%.*}; D=${X#*.}; echo bus/usb/$B/$D''
run_program: '/bin/sh' (stdout) 'bus/usb/1/6'
run_program: '/bin/sh' returned with status 0
udev_rules_get_name: add symlink 'bus/usb/1/6'
udev_rules_get_name: no node name set, will use kernel name 'usbdev1.6'
udev_device_event: device '/class/usb_device/usbdev1.6' already in database, validate currently present symlinks
udev_node_add: creating device node '/dev/usbdev1.6', major = '189', minor = '5', mode = '0660', uid = '0', gid = '0'
udev_node_add: creating symlink '/dev/bus/usb/1/6' to '../../../usbdev1.6'
main: run: 'socket:/org/kernel/udev/monitor'
zack@sw:~$