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

UEVENT[1175812802.250238] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-2 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
SUBSYSTEM=usb
SEQNUM=2879
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0

UEVENT[1175812802.250312] add      /class/usb_endpoint/usbdev4.11_ep00 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev4.11_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2880
MAJOR=254
MINOR=15

UEVENT[1175812802.250333] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0
SUBSYSTEM=usb
SEQNUM=2881
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v178Cp2002d0200dc00dsc00dp00ic08isc06ip50

UEVENT[1175812802.250355] add      /class/scsi_host/host7 (scsi_host)
ACTION=add
DEVPATH=/class/scsi_host/host7
SUBSYSTEM=scsi_host
SEQNUM=2882
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7

UEVENT[1175812802.250374] add      /class/usb_endpoint/usbdev4.11_ep81 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev4.11_ep81
SUBSYSTEM=usb_endpoint
SEQNUM=2883
MAJOR=254
MINOR=16

UEVENT[1175812802.250393] add      /class/usb_endpoint/usbdev4.11_ep02 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev4.11_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2884
MAJOR=254
MINOR=17

UEVENT[1175812802.250412] add      /class/usb_device/usbdev4.11 (usb_device)
ACTION=add
DEVPATH=/class/usb_device/usbdev4.11
SUBSYSTEM=usb_device
SEQNUM=2885
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=394

UDEV  [1175812802.290857] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-2 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
SUBSYSTEM=usb
SEQNUM=2879
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0
UDEVD_EVENT=1

UDEV  [1175812802.300040] add      /class/usb_endpoint/usbdev4.11_ep00 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev4.11_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2880
MAJOR=254
MINOR=15
UDEVD_EVENT=1
DEVNAME=/dev/usbdev4.11_ep00

UDEV  [1175812802.310186] add      /class/usb_endpoint/usbdev4.11_ep81 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev4.11_ep81
SUBSYSTEM=usb_endpoint
SEQNUM=2883
MAJOR=254
MINOR=16
UDEVD_EVENT=1
DEVNAME=/dev/usbdev4.11_ep81

UDEV  [1175812802.320108] add      /class/usb_endpoint/usbdev4.11_ep02 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev4.11_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2884
MAJOR=254
MINOR=17
UDEVD_EVENT=1
DEVNAME=/dev/usbdev4.11_ep02

UDEV  [1175812802.397867] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0
SUBSYSTEM=usb
SEQNUM=2881
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v178Cp2002d0200dc00dsc00dp00ic08isc06ip50
UDEVD_EVENT=1

UDEV  [1175812802.425272] add      /class/scsi_host/host7 (scsi_host)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_host/host7
SUBSYSTEM=scsi_host
SEQNUM=2882
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7
UDEVD_EVENT=1

UDEV  [1175812802.464251] add      /class/usb_device/usbdev4.11 (usb_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_device/usbdev4.11
SUBSYSTEM=usb_device
SEQNUM=2885
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=394
UDEVD_EVENT=1
USB_BUS=004
USB_DEV=011
DEVNAME=/dev/bus/usb/004/011

UEVENT[1175812807.247644] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
SUBSYSTEM=scsi
SEQNUM=2886
PHYSDEVBUS=scsi

UEVENT[1175812807.247681] add      /class/scsi_disk/7:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/class/scsi_disk/7:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2887
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1175812809.519658] add      /block/sdc (block)
ACTION=add
DEVPATH=/block/sdc
SUBSYSTEM=block
SEQNUM=2888
MINOR=32
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1175812809.519694] add      /block/sdc/sdc1 (block)
ACTION=add
DEVPATH=/block/sdc/sdc1
SUBSYSTEM=block
SEQNUM=2889
MINOR=33
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1175812809.519716] add      /class/scsi_device/7:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/class/scsi_device/7:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2890
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1175812809.519737] add      /class/scsi_generic/sg3 (scsi_generic)
ACTION=add
DEVPATH=/class/scsi_generic/sg3
SUBSYSTEM=scsi_generic
SEQNUM=2891
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
MAJOR=21
MINOR=3

UDEV  [1175812809.580812] add      /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
SUBSYSTEM=scsi
SEQNUM=2886
PHYSDEVBUS=scsi
UDEVD_EVENT=1

UDEV  [1175812809.600796] add      /class/scsi_disk/7:0:0:0 (scsi_disk)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_disk/7:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2887
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1175812809.600836] add      /class/scsi_device/7:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_device/7:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2890
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1175812809.600860] add      /class/scsi_generic/sg3 (scsi_generic)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_generic/sg3
SUBSYSTEM=scsi_generic
SEQNUM=2891
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
MAJOR=21
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/sg3

UDEV  [1175812809.624920] add      /block/sdc (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/sdc
SUBSYSTEM=block
SEQNUM=2888
MINOR=32
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
ID_VENDOR=U2140702
ID_MODEL=FLASH_DISK
ID_REVISION=2.00
ID_SERIAL=U2140702_FLASH_DISK_4431490702040830-0:0
ID_SERIAL_SHORT=4431490702040830
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_PATH=pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdc
DEVLINKS=/dev/disk/by-id/usb-U2140702_FLASH_DISK_4431490702040830-0:0 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0

UDEV  [1175812809.771309] add      /block/sdc/sdc1 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/sdc/sdc1
SUBSYSTEM=block
SEQNUM=2889
MINOR=33
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
ID_VENDOR=U2140702
ID_MODEL=FLASH_DISK
ID_REVISION=2.00
ID_SERIAL=U2140702_FLASH_DISK_4431490702040830-0:0
ID_SERIAL_SHORT=4431490702040830
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_PATH=pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdc1
DEVLINKS=/dev/disk/by-id/usb-U2140702_FLASH_DISK_4431490702040830-0:0-part1 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0-part1

UDEV  [1175812831.618179] remove   /class/usb_endpoint/usbdev4.11_ep81 (usb_endpoint)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev4.11_ep81
SUBSYSTEM=usb_endpoint
SEQNUM=2892
MAJOR=254
MINOR=16
UDEVD_EVENT=1
DEVNAME=/dev/usbdev4.11_ep81

UDEV  [1175812831.618225] remove   /class/usb_endpoint/usbdev4.11_ep02 (usb_endpoint)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev4.11_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2893
MAJOR=254
MINOR=17
UDEVD_EVENT=1
DEVNAME=/dev/usbdev4.11_ep02

UDEV  [1175812831.618387] remove   /class/scsi_generic/sg3 (scsi_generic)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/scsi_generic/sg3
SUBSYSTEM=scsi_generic
SEQNUM=2894
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
MAJOR=21
MINOR=3
UDEVD_EVENT=1
DEVNAME=/dev/sg3

UDEV  [1175812831.618419] remove   /class/scsi_device/7:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/scsi_device/7:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2895
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1175812831.618446] remove   /class/scsi_disk/7:0:0:0 (scsi_disk)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/scsi_disk/7:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2896
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1175812831.618472] remove   /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)
UDEV_LOG=3
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
SUBSYSTEM=scsi
SEQNUM=2899
PHYSDEVBUS=scsi
UDEVD_EVENT=1

UDEV  [1175812831.618497] remove   /class/scsi_host/host7 (scsi_host)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/scsi_host/host7
SUBSYSTEM=scsi_host
SEQNUM=2900
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7
UDEVD_EVENT=1

UDEV  [1175812831.618521] remove   /class/usb_endpoint/usbdev4.11_ep00 (usb_endpoint)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev4.11_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2903
MAJOR=254
MINOR=15
UDEVD_EVENT=1
DEVNAME=/dev/usbdev4.11_ep00

UDEV  [1175812831.618546] remove   /class/usb_device/usbdev4.11 (usb_device)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/usb_device/usbdev4.11
SUBSYSTEM=usb_device
SEQNUM=2902
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=394
UDEVD_EVENT=1
USB_BUS=004
USB_DEV=011
DEVNAME=/dev/bus/usb/004/011

UEVENT[1175812831.618574] remove   /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0 (usb)
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0
SUBSYSTEM=usb
SEQNUM=2901
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v178Cp2002d0200dc00dsc00dp00ic08isc06ip50

UEVENT[1175812831.618597] remove   /class/usb_device/usbdev4.11 (usb_device)
ACTION=remove
DEVPATH=/class/usb_device/usbdev4.11
SUBSYSTEM=usb_device
SEQNUM=2902
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
MAJOR=189
MINOR=394

UEVENT[1175812831.618619] remove   /class/usb_endpoint/usbdev4.11_ep00 (usb_endpoint)
ACTION=remove
DEVPATH=/class/usb_endpoint/usbdev4.11_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2903
MAJOR=254
MINOR=15

UEVENT[1175812831.618638] remove   /devices/pci0000:00/0000:00:1d.7/usb4/4-2 (usb)
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
SUBSYSTEM=usb
SEQNUM=2904
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0

UDEV  [1175812831.627916] remove   /block/sdc/sdc1 (block)
UDEV_LOG=3
ACTION=remove
DEVPATH=/block/sdc/sdc1
SUBSYSTEM=block
SEQNUM=2897
MINOR=33
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
ID_VENDOR=U2140702
ID_MODEL=FLASH_DISK
ID_REVISION=2.00
ID_SERIAL=U2140702_FLASH_DISK_4431490702040830-0:0
ID_SERIAL_SHORT=4431490702040830
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_PATH=pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdc1
DEVLINKS=/dev/disk/by-id/usb-U2140702_FLASH_DISK_4431490702040830-0:0-part1 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0-part1

UDEV  [1175812831.627968] remove   /devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0 (usb)
UDEV_LOG=3
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0
SUBSYSTEM=usb
SEQNUM=2901
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v178Cp2002d0200dc00dsc00dp00ic08isc06ip50
UDEVD_EVENT=1

UDEV  [1175812831.635562] remove   /block/sdc (block)
UDEV_LOG=3
ACTION=remove
DEVPATH=/block/sdc
SUBSYSTEM=block
SEQNUM=2898
MINOR=32
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2/4-2:1.0/host7/target7:0:0/7:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
ID_VENDOR=U2140702
ID_MODEL=FLASH_DISK
ID_REVISION=2.00
ID_SERIAL=U2140702_FLASH_DISK_4431490702040830-0:0
ID_SERIAL_SHORT=4431490702040830
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_PATH=pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdc
DEVLINKS=/dev/disk/by-id/usb-U2140702_FLASH_DISK_4431490702040830-0:0 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:2:1.0-scsi-0:0:0:0

UDEV  [1175812831.636210] remove   /devices/pci0000:00/0000:00:1d.7/usb4/4-2 (usb)
UDEV_LOG=3
ACTION=remove
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb4/4-2
SUBSYSTEM=usb
SEQNUM=2904
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/004/011
PRODUCT=178c/2002/200
TYPE=0/0/0
UDEVD_EVENT=1