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

UEVENT[1177845192.011136] add      /devices/pci0000:00/0000:00:10.4/usb5/5-2 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2
SUBSYSTEM=usb
SEQNUM=2846
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/005/003
PRODUCT=7ab/fccd/406
TYPE=0/0/0

UEVENT[1177845192.011173] add      /class/usb_endpoint/usbdev5.3_ep00 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev5.3_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2847
MAJOR=254
MINOR=12

UEVENT[1177845192.011180] add      /devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0
SUBSYSTEM=usb
SEQNUM=2848
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/005/003
PRODUCT=7ab/fccd/406
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v07ABpFCCDd0406dc00dsc00dp00ic08isc06ip50

UEVENT[1177845192.011187] add      /class/usb_endpoint/usbdev5.3_ep01 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev5.3_ep01
SUBSYSTEM=usb_endpoint
SEQNUM=2849
MAJOR=254
MINOR=13

UEVENT[1177845192.011197] add      /class/usb_endpoint/usbdev5.3_ep82 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev5.3_ep82
SUBSYSTEM=usb_endpoint
SEQNUM=2850
MAJOR=254
MINOR=14

UEVENT[1177845192.011203] add      /class/usb_device/usbdev5.3 (usb_device)
ACTION=add
DEVPATH=/class/usb_device/usbdev5.3
SUBSYSTEM=usb_device
SEQNUM=2851
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=514

UDEV  [1177845192.012380] add      /devices/pci0000:00/0000:00:10.4/usb5/5-2 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2
SUBSYSTEM=usb
SEQNUM=2846
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/005/003
PRODUCT=7ab/fccd/406
TYPE=0/0/0
UDEVD_EVENT=1

UDEV  [1177845192.019060] add      /class/usb_endpoint/usbdev5.3_ep00 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev5.3_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2847
MAJOR=254
MINOR=12
UDEVD_EVENT=1
DEVNAME=/dev/usbdev5.3_ep00

UDEV  [1177845192.215692] add      /class/usb_endpoint/usbdev5.3_ep01 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev5.3_ep01
SUBSYSTEM=usb_endpoint
SEQNUM=2849
MAJOR=254
MINOR=13
UDEVD_EVENT=1
DEVNAME=/dev/usbdev5.3_ep01

UDEV  [1177845192.218717] add      /class/usb_endpoint/usbdev5.3_ep82 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev5.3_ep82
SUBSYSTEM=usb_endpoint
SEQNUM=2850
MAJOR=254
MINOR=14
UDEVD_EVENT=1
DEVNAME=/dev/usbdev5.3_ep82

UEVENT[1177845192.261935] add      /module/libusual/drivers (module)
ACTION=add
DEVPATH=/module/libusual/drivers
SUBSYSTEM=module
SEQNUM=2852

UDEV  [1177845192.262643] add      /module/libusual/drivers (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/libusual/drivers
SUBSYSTEM=module
SEQNUM=2852
UDEVD_EVENT=1

UEVENT[1177845192.262980] add      /module/libusual (module)
ACTION=add
DEVPATH=/module/libusual
SUBSYSTEM=module
SEQNUM=2853

UDEV  [1177845192.263570] add      /module/libusual (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/libusual
SUBSYSTEM=module
SEQNUM=2853
UDEVD_EVENT=1

UEVENT[1177845192.264236] add      /bus/usb/drivers/libusual (drivers)
ACTION=add
DEVPATH=/bus/usb/drivers/libusual
SUBSYSTEM=drivers
SEQNUM=2854

UDEV  [1177845192.279395] add      /bus/usb/drivers/libusual (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/libusual
SUBSYSTEM=drivers
SEQNUM=2854
UDEVD_EVENT=1

UEVENT[1177845192.282666] add      /module/usb_storage/drivers (module)
ACTION=add
DEVPATH=/module/usb_storage/drivers
SUBSYSTEM=module
SEQNUM=2855

UEVENT[1177845192.282695] add      /module/usb_storage (module)
ACTION=add
DEVPATH=/module/usb_storage
SUBSYSTEM=module
SEQNUM=2856

UEVENT[1177845192.282700] add      /bus/usb/drivers/usb-storage (drivers)
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=2857

UEVENT[1177845192.282706] add      /class/scsi_host/host5 (scsi_host)
ACTION=add
DEVPATH=/class/scsi_host/host5
SUBSYSTEM=scsi_host
SEQNUM=2858
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5

UDEV  [1177845192.285977] add      /devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0
SUBSYSTEM=usb
SEQNUM=2848
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/005/003
PRODUCT=7ab/fccd/406
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v07ABpFCCDd0406dc00dsc00dp00ic08isc06ip50
UDEVD_EVENT=1

UDEV  [1177845192.286952] add      /module/usb_storage/drivers (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/usb_storage/drivers
SUBSYSTEM=module
SEQNUM=2855
UDEVD_EVENT=1

UDEV  [1177845192.287770] add      /bus/usb/drivers/usb-storage (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=2857
UDEVD_EVENT=1

UDEV  [1177845192.336675] add      /class/scsi_host/host5 (scsi_host)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_host/host5
SUBSYSTEM=scsi_host
SEQNUM=2858
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5
UDEVD_EVENT=1

UDEV  [1177845192.337224] add      /module/usb_storage (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/usb_storage
SUBSYSTEM=module
SEQNUM=2856
UDEVD_EVENT=1

UDEV  [1177845193.225654] add      /class/usb_device/usbdev5.3 (usb_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_device/usbdev5.3
SUBSYSTEM=usb_device
SEQNUM=2851
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=514
UDEVD_EVENT=1
USB_BUS=005
USB_DEV=003
DEVNAME=/dev/bus/usb/005/003

UEVENT[1177845203.142812] add      /devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
SUBSYSTEM=scsi
SEQNUM=2859
PHYSDEVBUS=scsi

UEVENT[1177845203.142827] add      /class/scsi_disk/5:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/class/scsi_disk/5:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2860
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UDEV  [1177845207.126214] add      /devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
SUBSYSTEM=scsi
SEQNUM=2859
PHYSDEVBUS=scsi
UDEVD_EVENT=1

UDEV  [1177845207.126477] add      /class/scsi_disk/5:0:0:0 (scsi_disk)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_disk/5:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2860
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UEVENT[1177845208.411381] remove   /class/usb_endpoint/usbdev5.3_ep01 (usb_endpoint)
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev5.3_ep01
SUBSYSTEM=usb_endpoint
SEQNUM=2861
MAJOR=254
MINOR=13

UDEV  [1177845208.413599] remove   /class/usb_endpoint/usbdev5.3_ep01 (usb_endpoint)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev5.3_ep01
SUBSYSTEM=usb_endpoint
SEQNUM=2861
MAJOR=254
MINOR=13
UDEVD_EVENT=1
DEVNAME=/dev/usbdev5.3_ep01

UEVENT[1177845208.413971] remove   /class/usb_endpoint/usbdev5.3_ep82 (usb_endpoint)
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev5.3_ep82
SUBSYSTEM=usb_endpoint
SEQNUM=2862
MAJOR=254
MINOR=14

UEVENT[1177845208.425009] add      /block/sdb (block)
ACTION=add
DEVPATH=/block/sdb
SUBSYSTEM=block
SEQNUM=2863
MINOR=16
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1177845208.425026] add      /class/scsi_device/5:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/class/scsi_device/5:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2864
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1177845208.425033] add      /class/scsi_generic/sg2 (scsi_generic)
ACTION=add
DEVPATH=/class/scsi_generic/sg2
SUBSYSTEM=scsi_generic
SEQNUM=2865
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
MAJOR=21
MINOR=2

UDEV  [1177845208.440081] remove   /class/usb_endpoint/usbdev5.3_ep82 (usb_endpoint)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev5.3_ep82
SUBSYSTEM=usb_endpoint
SEQNUM=2862
MAJOR=254
MINOR=14
UDEVD_EVENT=1
DEVNAME=/dev/usbdev5.3_ep82

UDEV  [1177845208.463955] add      /class/scsi_device/5:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_device/5:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2864
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1177845208.789479] add      /class/scsi_generic/sg2 (scsi_generic)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_generic/sg2
SUBSYSTEM=scsi_generic
SEQNUM=2865
PHYSDEVPATH=/devices/pci0000:00/0000:00:10.4/usb5/5-2/5-2:1.0/host5/target5:0:0/5:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
MAJOR=21
MINOR=2
UDEVD_EVENT=1
DEVNAME=/dev/sg2

UDEV  [1177845208.874529] add      /block/sdb (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/sdb
SUBSYSTEM=block
SEQNUM=2863
MINOR=16
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:10