udevmonitor will print the received events for:
UDEV the event which udev sends out after rule processing
UEVENT the kernel uevent

UEVENT[1179194312.906670] add      /devices/pci0000:00/0000:00:1d.0/usb1/1-1 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1
SUBSYSTEM=usb
SEQNUM=2568
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/001/002
PRODUCT=461/828/100
TYPE=0/0/0

UEVENT[1179194312.906766] add      /class/usb_endpoint/usbdev1.2_ep00 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev1.2_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2569
MAJOR=254
MINOR=2

UEVENT[1179194312.909681] add      /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0
SUBSYSTEM=usb
SEQNUM=2570
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/001/002
PRODUCT=461/828/100
TYPE=0/0/0
INTERFACE=8/5/80
MODALIAS=usb:v0461p0828d0100dc00dsc00dp00ic08isc05ip50

UEVENT[1179194312.976661] add      /class/usb_endpoint/usbdev1.2_ep82 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev1.2_ep82
SUBSYSTEM=usb_endpoint
SEQNUM=2571
MAJOR=254
MINOR=3

UEVENT[1179194312.976733] add      /class/usb_endpoint/usbdev1.2_ep02 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev1.2_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2572
MAJOR=254
MINOR=4

UEVENT[1179194312.976755] add      /class/usb_device/usbdev1.2 (usb_device)
ACTION=add
DEVPATH=/class/usb_device/usbdev1.2
SUBSYSTEM=usb_device
SEQNUM=2573
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=1

UDEV  [1179194313.274478] add      /devices/pci0000:00/0000:00:1d.0/usb1/1-1 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1
SUBSYSTEM=usb
SEQNUM=2568
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/001/002
PRODUCT=461/828/100
TYPE=0/0/0
UDEVD_EVENT=1

UDEV  [1179194313.277614] add      /class/usb_endpoint/usbdev1.2_ep00 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev1.2_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2569
MAJOR=254
MINOR=2
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.2_ep00

UDEV  [1179194313.279092] add      /class/usb_endpoint/usbdev1.2_ep82 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev1.2_ep82
SUBSYSTEM=usb_endpoint
SEQNUM=2571
MAJOR=254
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.2_ep82

UDEV  [1179194313.280218] add      /class/usb_endpoint/usbdev1.2_ep02 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev1.2_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2572
MAJOR=254
MINOR=4
UDEVD_EVENT=1
DEVNAME=/dev/usbdev1.2_ep02

UEVENT[1179194313.853895] add      /module/libusual/drivers (module)
ACTION=add
DEVPATH=/module/libusual/drivers
SUBSYSTEM=module
SEQNUM=2574

UDEV  [1179194313.856033] add      /module/libusual/drivers (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/libusual/drivers
SUBSYSTEM=module
SEQNUM=2574
UDEVD_EVENT=1

UEVENT[1179194313.856125] add      /module/libusual (module)
ACTION=add
DEVPATH=/module/libusual
SUBSYSTEM=module
SEQNUM=2575

UDEV  [1179194313.857821] add      /module/libusual (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/libusual
SUBSYSTEM=module
SEQNUM=2575
UDEVD_EVENT=1

UEVENT[1179194313.858070] add      /bus/usb/drivers/libusual (drivers)
ACTION=add
DEVPATH=/bus/usb/drivers/libusual
SUBSYSTEM=drivers
SEQNUM=2576

UDEV  [1179194313.859144] add      /bus/usb/drivers/libusual (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/libusual
SUBSYSTEM=drivers
SEQNUM=2576
UDEVD_EVENT=1

UDEV  [1179194313.883863] add      /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0
SUBSYSTEM=usb
SEQNUM=2570
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/001/002
PRODUCT=461/828/100
TYPE=0/0/0
INTERFACE=8/5/80
MODALIAS=usb:v0461p0828d0100dc00dsc00dp00ic08isc05ip50
UDEVD_EVENT=1

UEVENT[1179194313.916880] add      /module/usb_storage/drivers (module)
ACTION=add
DEVPATH=/module/usb_storage/drivers
SUBSYSTEM=module
SEQNUM=2577

UEVENT[1179194313.916949] add      /module/usb_storage (module)
ACTION=add
DEVPATH=/module/usb_storage
SUBSYSTEM=module
SEQNUM=2578

UEVENT[1179194313.916991] add      /bus/usb/drivers/usb-storage (drivers)
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=2579

UEVENT[1179194313.917013] add      /class/scsi_host/host2 (scsi_host)
ACTION=add
DEVPATH=/class/scsi_host/host2
SUBSYSTEM=scsi_host
SEQNUM=2580
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2

UDEV  [1179194314.095615] add      /module/usb_storage/drivers (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/usb_storage/drivers
SUBSYSTEM=module
SEQNUM=2577
UDEVD_EVENT=1

UDEV  [1179194314.097166] add      /bus/usb/drivers/usb-storage (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=2579
UDEVD_EVENT=1

UDEV  [1179194314.098347] add      /class/scsi_host/host2 (scsi_host)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_host/host2
SUBSYSTEM=scsi_host
SEQNUM=2580
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2
UDEVD_EVENT=1

UDEV  [1179194314.099487] add      /module/usb_storage (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/usb_storage
SUBSYSTEM=module
SEQNUM=2578
UDEVD_EVENT=1

UDEV  [1179194314.738210] add      /class/usb_device/usbdev1.2 (usb_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_device/usbdev1.2
SUBSYSTEM=usb_device
SEQNUM=2573
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=1
UDEVD_EVENT=1
USB_BUS=001
USB_DEV=002
DEVNAME=/dev/bus/usb/001/002

UEVENT[1179194319.001304] add      /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
SUBSYSTEM=scsi
SEQNUM=2581
PHYSDEVBUS=scsi

UEVENT[1179194319.001393] add      /class/scsi_disk/2:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/class/scsi_disk/2:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2582
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1179194319.043180] add      /block/sdb (block)
ACTION=add
DEVPATH=/block/sdb
SUBSYSTEM=block
SEQNUM=2583
MINOR=16
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1179194319.043232] add      /block/sdb/sdb1 (block)
ACTION=add
DEVPATH=/block/sdb/sdb1
SUBSYSTEM=block
SEQNUM=2584
MINOR=17
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1179194319.043256] add      /class/scsi_device/2:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/class/scsi_device/2:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2585
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1179194319.043278] add      /class/scsi_generic/sg1 (scsi_generic)
ACTION=add
DEVPATH=/class/scsi_generic/sg1
SUBSYSTEM=scsi_generic
SEQNUM=2586
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
MAJOR=21
MINOR=1

UDEV  [1179194319.103006] add      /devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
SUBSYSTEM=scsi
SEQNUM=2581
PHYSDEVBUS=scsi
UDEVD_EVENT=1

UDEV  [1179194319.114807] add      /class/scsi_disk/2:0:0:0 (scsi_disk)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_disk/2:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2582
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1179194319.114878] add      /class/scsi_device/2:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_device/2:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2585
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1:1.0/host2/target2:0:0/2:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1179194319.114906] add      /class/scsi_generic/sg1 (scsi_generic)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_generic/sg1
SUBSYSTEM=