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

UEVENT[1191251184.382314] add      /devices/pci0000:00/0000:00:1d.7/usb7/7-5 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5
SUBSYSTEM=usb
SEQNUM=2862
MAJOR=189
MINOR=771
DEVTYPE=usb_device
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/007/004
PRODUCT=4b4/6830/1
TYPE=0/0/0
BUSNUM=007
DEVNUM=004

UEVENT[1191251184.382342] add      /class/usb_endpoint/usbdev7.4_ep00 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev7.4_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2863
MAJOR=254
MINOR=25
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb

UEVENT[1191251184.382522] add      /devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0 (usb)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0
SUBSYSTEM=usb
SEQNUM=2864
DEVTYPE=usb_interface
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/007/004
PRODUCT=4b4/6830/1
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v04B4p6830d0001dc00dsc00dp00ic08isc06ip50

UEVENT[1191251184.382618] add      /class/usb_endpoint/usbdev7.4_ep02 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev7.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2865
MAJOR=254
MINOR=26
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0
PHYSDEVBUS=usb

UEVENT[1191251184.382627] add      /class/usb_endpoint/usbdev7.4_ep88 (usb_endpoint)
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev7.4_ep88
SUBSYSTEM=usb_endpoint
SEQNUM=2866
MAJOR=254
MINOR=27
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0
PHYSDEVBUS=usb

UEVENT[1191251184.382633] add      /class/usb_device/usbdev7.4 (usb_device)
ACTION=add
DEVPATH=/class/usb_device/usbdev7.4
SUBSYSTEM=usb_device
SEQNUM=2867
MAJOR=189
MINOR=771
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb

UDEV  [1191251184.387740] add      /devices/pci0000:00/0000:00:1d.7/usb7/7-5 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5
SUBSYSTEM=usb
SEQNUM=2862
MAJOR=189
MINOR=771
DEVTYPE=usb_device
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/007/004
PRODUCT=4b4/6830/1
TYPE=0/0/0
BUSNUM=007
DEVNUM=004
UDEVD_EVENT=1
DEVNAME=/dev/7-5

UDEV  [1191251184.387760] add      /class/usb_endpoint/usbdev7.4_ep00 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev7.4_ep00
SUBSYSTEM=usb_endpoint
SEQNUM=2863
MAJOR=254
MINOR=25
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
UDEVD_EVENT=1
DEVNAME=/dev/usbdev7.4_ep00

UEVENT[1191251184.438870] add      /module/libusual (module)
ACTION=add
DEVPATH=/module/libusual
SUBSYSTEM=module
SEQNUM=2868

UDEV  [1191251184.439797] add      /module/libusual (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/libusual
SUBSYSTEM=module
SEQNUM=2868
UDEVD_EVENT=1

UEVENT[1191251184.440133] add      /bus/usb/drivers/libusual (drivers)
ACTION=add
DEVPATH=/bus/usb/drivers/libusual
SUBSYSTEM=drivers
SEQNUM=2869

UDEV  [1191251184.440965] add      /bus/usb/drivers/libusual (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/libusual
SUBSYSTEM=drivers
SEQNUM=2869
UDEVD_EVENT=1

UDEV  [1191251184.458725] add      /devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0
SUBSYSTEM=usb
SEQNUM=2864
DEVTYPE=usb_interface
PHYSDEVBUS=usb
DEVICE=/proc/bus/usb/007/004
PRODUCT=4b4/6830/1
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v04B4p6830d0001dc00dsc00dp00ic08isc06ip50
UDEVD_EVENT=1

UDEV  [1191251184.461383] add      /class/usb_endpoint/usbdev7.4_ep02 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev7.4_ep02
SUBSYSTEM=usb_endpoint
SEQNUM=2865
MAJOR=254
MINOR=26
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0
PHYSDEVBUS=usb
UDEVD_EVENT=1
DEVNAME=/dev/usbdev7.4_ep02

UDEV  [1191251184.461399] add      /class/usb_endpoint/usbdev7.4_ep88 (usb_endpoint)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_endpoint/usbdev7.4_ep88
SUBSYSTEM=usb_endpoint
SEQNUM=2866
MAJOR=254
MINOR=27
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0
PHYSDEVBUS=usb
UDEVD_EVENT=1
DEVNAME=/dev/usbdev7.4_ep88

UEVENT[1191251184.475183] add      /module/ide_core (module)
ACTION=add
DEVPATH=/module/ide_core
SUBSYSTEM=module
SEQNUM=2870

UEVENT[1191251184.475362] add      /bus/pnp/drivers/ide (drivers)
ACTION=add
DEVPATH=/bus/pnp/drivers/ide
SUBSYSTEM=drivers
SEQNUM=2871

UDEV  [1191251184.478136] add      /bus/pnp/drivers/ide (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/pnp/drivers/ide
SUBSYSTEM=drivers
SEQNUM=2871
UDEVD_EVENT=1

UEVENT[1191251184.478222] add      /bus/usb/drivers/usb-storage (drivers)
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=2873

UEVENT[1191251184.478300] add      /class/scsi_host/host8 (scsi_host)
ACTION=add
DEVPATH=/class/scsi_host/host8
SUBSYSTEM=scsi_host
SEQNUM=2874
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8

UDEV  [1191251184.479927] add      /bus/usb/drivers/usb-storage (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=2873
UDEVD_EVENT=1

UDEV  [1191251184.489443] add      /class/usb_device/usbdev7.4 (usb_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/usb_device/usbdev7.4
SUBSYSTEM=usb_device
SEQNUM=2867
MAJOR=189
MINOR=771
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5
PHYSDEVBUS=usb
PHYSDEVDRIVER=usb
UDEVD_EVENT=1
USB_BUS=007
USB_DEV=004
DEVNAME=/dev/bus/usb/007/004

UDEV  [1191251184.489581] add      /module/ide_core (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/ide_core
SUBSYSTEM=module
SEQNUM=2870
UDEVD_EVENT=1

UDEV  [1191251184.489588] add      /module/usb_storage (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/usb_storage
SUBSYSTEM=module
SEQNUM=2872
UDEVD_EVENT=1

UDEV  [1191251184.489594] add      /class/scsi_host/host8 (scsi_host)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_host/host8
SUBSYSTEM=scsi_host
SEQNUM=2874
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8
UDEVD_EVENT=1

UEVENT[1191251193.085641] add      /devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0 (scsi)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
SUBSYSTEM=scsi
SEQNUM=2875
PHYSDEVBUS=scsi
MODALIAS=scsi:t-0x00

UEVENT[1191251193.085688] add      /class/scsi_disk/8:0:0:0 (scsi_disk)
ACTION=add
DEVPATH=/class/scsi_disk/8:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2876
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1191251193.108636] add      /block/sdd (block)
ACTION=add
DEVPATH=/block/sdd
SUBSYSTEM=block
SEQNUM=2877
MINOR=48
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1191251193.108649] add      /block/sdd/sdd1 (block)
ACTION=add
DEVPATH=/block/sdd/sdd1
SUBSYSTEM=block
SEQNUM=2878
MINOR=49
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1191251193.108684] add      /class/scsi_device/8:0:0:0 (scsi_device)
ACTION=add
DEVPATH=/class/scsi_device/8:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2879
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UEVENT[1191251193.108713] add      /class/scsi_generic/sg4 (scsi_generic)
ACTION=add
DEVPATH=/class/scsi_generic/sg4
SUBSYSTEM=scsi_generic
SEQNUM=2880
MAJOR=21
MINOR=4
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd

UDEV  [1191251193.155140] add      /devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
SUBSYSTEM=scsi
SEQNUM=2875
PHYSDEVBUS=scsi
MODALIAS=scsi:t-0x00
UDEVD_EVENT=1

UDEV  [1191251193.156246] add      /class/scsi_disk/8:0:0:0 (scsi_disk)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_disk/8:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=2876
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1191251193.159349] add      /class/scsi_device/8:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_device/8:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=2879
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1

UDEV  [1191251193.160480] add      /class/scsi_generic/sg4 (scsi_generic)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/scsi_generic/sg4
SUBSYSTEM=scsi_generic
SEQNUM=2880
MAJOR=21
MINOR=4
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
DEVNAME=/dev/sg4

UDEV  [1191251193.209401] add      /block/sdd (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/sdd
SUBSYSTEM=block
SEQNUM=2877
MINOR=48
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
DEVTYPE=disk
ID_VENDOR=ST316002
ID_MODEL=3A
ID_REVISION=0001
ID_SERIAL=ST316002_3A_CEF1089C49CB-0:0
ID_SERIAL_SHORT=CEF1089C49CB
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_PATH=pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0
DEVNAME=/dev/sdd
DEVLINKS=/dev/disk/by-id/usb-ST316002_3A_CEF1089C49CB-0:0 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0

UDEV  [1191251193.239944] add      /block/sdd/sdd1 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/sdd/sdd1
SUBSYSTEM=block
SEQNUM=2878
MINOR=49
MAJOR=8
PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb7/7-5/7-5:1.0/host8/target8:0:0/8:0:0:0
PHYSDEVBUS=scsi
PHYSDEVDRIVER=sd
UDEVD_EVENT=1
DEVTYPE=partition
ID_VENDOR=ST316002
ID_MODEL=3A
ID_REVISION=0001
ID_SERIAL=ST316002_3A_CEF1089C49CB-0:0
ID_SERIAL_SHORT=CEF1089C49CB
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_PATH=pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0
ID_FS_USAGE=crypto
ID_FS_TYPE=crypto_LUKS
ID_FS_VERSION=
ID_FS_UUID=8db1c271-1905-491b-8034-7f4181856b67
ID_FS_UUID_ENC=8db1c271-1905-491b-8034-7f4181856b67
ID_FS_LABEL=
ID_FS_LABEL_ENC=
ID_FS_LABEL_SAFE=
DEVNAME=/dev/sdd1
DEVLINKS=/dev/disk/by-id/usb-ST316002_3A_CEF1089C49CB-0:0-part1 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:5:1.0-scsi-0:0:0:0-part1 /dev/disk/by-uuid/8db1c271-1905-491b-8034-7f4181856b67

UEVENT[1191251206.473863] add      /block/dm-0 (block)
ACTION=add
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2881
MINOR=0
MAJOR=254

UDEV  [1191251206.479018] add      /block/dm-0 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2881
MINOR=0
MAJOR=254
UDEVD_EVENT=1
DM_NAME=temporary-cryptsetup-7609
DM_STATE=ACTIVE
DM_TABLE_STATE=NONE
DM_OPENCOUNT=0
DM_LAST_EVENT_NR=0
DM_MAJOR=254
DM_MINOR=0
DM_TARGET_COUNT=0
DEVNAME=/dev/mapper/temporary-cryptsetup-7609
DEVLINKS=/dev/disk/by-id/dm-name-temporary-cryptsetup-7609

UEVENT[1191251206.515502] add      /module/blkcipher (module)
ACTION=add
DEVPATH=/module/blkcipher
SUBSYSTEM=module
SEQNUM=2882

UDEV  [1191251206.516478] add      /module/blkcipher (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/blkcipher
SUBSYSTEM=module
SEQNUM=2882
UDEVD_EVENT=1

UEVENT[1191251206.518098] add      /module/cbc (module)
ACTION=add
DEVPATH=/module/cbc
SUBSYSTEM=module
SEQNUM=2883

UDEV  [1191251206.519008] add      /module/cbc (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/cbc
SUBSYSTEM=module
SEQNUM=2883
UDEVD_EVENT=1

UEVENT[1191251206.528653] add      /module/sha256 (module)
ACTION=add
DEVPATH=/module/sha256
SUBSYSTEM=module
SEQNUM=2884

UDEV  [1191251206.530203] add      /module/sha256 (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/sha256
SUBSYSTEM=module
SEQNUM=2884
UDEVD_EVENT=1

UEVENT[1191251206.531573] change   /block/dm-0 (block)
ACTION=change
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2885
MINOR=0
MAJOR=254

UDEV  [1191251206.548865] change   /block/dm-0 (block)
UDEV_LOG=3
ACTION=change
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2885
MINOR=0
MAJOR=254
UDEVD_EVENT=1
DM_NAME=temporary-cryptsetup-7609
DM_STATE= READONLY
DM_TABLE_STATE=LIVE
DM_OPENCOUNT=1
DM_LAST_EVENT_NR=0
DM_MAJOR=254
DM_MINOR=0
DM_TARGET_COUNT=1
DM_TARGET_TYPES=crypt
DEVNAME=/dev/mapper/temporary-cryptsetup-7609
DEVLINKS=/dev/disk/by-id/dm-name-temporary-cryptsetup-7609

UEVENT[1191251206.689043] remove   /block/dm-0 (block)
ACTION=remove
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2886
MINOR=0
MAJOR=254

UEVENT[1191251206.696235] add      /block/dm-0 (block)
ACTION=add
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2887
MINOR=0
MAJOR=254

UEVENT[1191251206.696345] change   /block/dm-0 (block)
ACTION=change
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2888
MINOR=0
MAJOR=254

UDEV  [1191251206.777679] add      /block/dm-0 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/block/dm-0
SUBSYSTEM=block
SEQNUM=2887
MINOR=0
MAJOR=254
UDEVD_EVENT=1
DM_NAME=luks_crypto_8db1c271-1905-491b-8034-7f4181856b67
DM_STATE=ACTIVE
DM_TABLE_STATE=LIVE
DM_OPENCOUNT=0
DM_LAST_EVENT_NR=0
DM_MAJOR=254
DM_MINOR=0
DM_TARGET_COUNT=1
DM_TARGET_TYPES=crypt
ID_FS_USAGE=filesystem
ID_FS_TYPE=ext3
ID_FS_VERSION=1.0
ID_FS_UUID=2e940125-b371-41a5-b83a-807345c30208
ID_FS_UUID_ENC=2e940125-b371-41a5-b83a-807345c30208
ID_FS_LABEL=
ID