monitor will print the received events for:
UDEV - the event which udev sends out after rule processing

UDEV  [1253417662.552858] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3
SUBSYSTEM=usb
DEVNAME=/dev/bus/usb/001/009
DEVTYPE=usb_device
DEVICE=/proc/bus/usb/001/009
PRODUCT=59b/377/0
TYPE=0/0/0
BUSNUM=001
DEVNUM=009
SEQNUM=1718
ID_VENDOR=Iomega
ID_VENDOR_ENC=Iomega
ID_VENDOR_ID=059b
ID_MODEL=Iomega_USB2_1394
ID_MODEL_ENC=Iomega\x20USB2\x2f1394
ID_MODEL_ID=0377
ID_REVISION=0000
ID_SERIAL=Iomega_Iomega_USB2_1394_S07I250200001425
ID_SERIAL_SHORT=S07I250200001425
ID_BUS=usb
ID_USB_INTERFACES=:080650:
MAJOR=189
MINOR=8

UDEV  [1253417662.559736] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0
SUBSYSTEM=usb
DEVTYPE=usb_interface
DEVICE=/proc/bus/usb/001/009
PRODUCT=59b/377/0
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v059Bp0377d0000dc00dsc00dp00ic08isc06ip50
SEQNUM=1719

UDEV  [1253417662.560889] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10
SUBSYSTEM=scsi
DEVTYPE=scsi_host
SEQNUM=1720

UDEV  [1253417662.565071] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/scsi_host/host10 (scsi_host)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/scsi_host/host10
SUBSYSTEM=scsi_host
SEQNUM=1721

UDEV  [1253417667.540054] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0
SUBSYSTEM=scsi
DEVTYPE=scsi_target
SEQNUM=1722

UDEV  [1253417667.540131] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0
SUBSYSTEM=scsi
DEVTYPE=scsi_device
MODALIAS=scsi:t-0x00
SEQNUM=1723

UDEV  [1253417667.543467] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/scsi_device/10:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/scsi_device/10:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=1725

UDEV  [1253417667.554481] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/scsi_generic/sg1 (scsi_generic)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/scsi_generic/sg1
SUBSYSTEM=scsi_generic
DEVNAME=/dev/sg1
SEQNUM=1726
MAJOR=21
MINOR=1

UDEV  [1253417667.556287] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/scsi_disk/10:0:0:0 (scsi_disk)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/scsi_disk/10:0:0:0
SUBSYSTEM=scsi_disk
SEQNUM=1724

UDEV  [1253417667.596918] add      /devices/virtual/bdi/8:32 (bdi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/virtual/bdi/8:32
SUBSYSTEM=bdi
SEQNUM=1731

UDEV  [1253417668.002149] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc
SUBSYSTEM=block
DEVNAME=/dev/sdc
DEVTYPE=disk
SEQNUM=1727
ID_VENDOR=Ext_Hard
ID_VENDOR_ENC=Ext\x20Hard
ID_VENDOR_ID=059b
ID_MODEL=Disk
ID_MODEL_ENC=\x20Disk\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0377
ID_REVISION=0000
ID_SERIAL=Ext_Hard_Disk_S07I250200001425-0:0
ID_SERIAL_SHORT=S07I250200001425
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0
DKD_MEDIA_AVAILABLE=1
DKD_PARTITION_TABLE=1
DKD_PARTITION_TABLE_SCHEME=mbr
DKD_ATA_SMART_IS_AVAILABLE=1
DKD_PRESENTATION_NOPOLICY=0
MAJOR=8
MINOR=32
DEVLINKS=/dev/disk/by-id/usb-Ext_Hard_Disk_S07I250200001425-0:0 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0

UDEV  [1253417668.815298] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc/sdc3 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc/sdc3
SUBSYSTEM=block
DEVNAME=/dev/sdc3
DEVTYPE=partition
SEQNUM=1730
ID_VENDOR=Ext_Hard
ID_VENDOR_ENC=Ext\x20Hard
ID_VENDOR_ID=059b
ID_MODEL=Disk
ID_MODEL_ENC=\x20Disk\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0377
ID_REVISION=0000
ID_SERIAL=Ext_Hard_Disk_S07I250200001425-0:0
ID_SERIAL_SHORT=S07I250200001425
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0
ID_FS_LABEL=UNTITLED
ID_FS_LABEL_ENC=UNTITLED
ID_FS_UUID=18B0-1DE9
ID_FS_UUID_ENC=18B0-1DE9
ID_FS_VERSION=FAT32
ID_FS_TYPE=vfat
ID_FS_USAGE=filesystem
DKD_PARTITION=1
DKD_PARTITION_SCHEME=mbr
DKD_PARTITION_NUMBER=3
DKD_PARTITION_TYPE=0x0b
DKD_PARTITION_SIZE=134510552064
DKD_PARTITION_FLAGS=boot
DKD_PRESENTATION_NOPOLICY=0
MAJOR=8
MINOR=35
DEVLINKS=/dev/disk/by-id/usb-Ext_Hard_Disk_S07I250200001425-0:0-part3 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0-part3 /dev/disk/by-uuid/18B0-1DE9 /dev/disk/by-label/UNTITLED

UDEV  [1253417668.890424] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc/sdc1 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc/sdc1
SUBSYSTEM=block
DEVNAME=/dev/sdc1
DEVTYPE=partition
SEQNUM=1728
ID_VENDOR=Ext_Hard
ID_VENDOR_ENC=Ext\x20Hard
ID_VENDOR_ID=059b
ID_MODEL=Disk
ID_MODEL_ENC=\x20Disk\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0377
ID_REVISION=0000
ID_SERIAL=Ext_Hard_Disk_S07I250200001425-0:0
ID_SERIAL_SHORT=S07I250200001425
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0
DKD_PARTITION=1
DKD_PARTITION_SCHEME=mbr
DKD_PARTITION_NUMBER=1
DKD_PARTITION_TYPE=0x83
DKD_PARTITION_SIZE=32769483264
DKD_PRESENTATION_NOPOLICY=0
MAJOR=8
MINOR=33
DEVLINKS=/dev/disk/by-id/usb-Ext_Hard_Disk_S07I250200001425-0:0-part1 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0-part1

UDEV  [1253417668.910936] add      /devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc/sdc2 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host10/target10:0:0/10:0:0:0/block/sdc/sdc2
SUBSYSTEM=block
DEVNAME=/dev/sdc2
DEVTYPE=partition
SEQNUM=1729
ID_VENDOR=Ext_Hard
ID_VENDOR_ENC=Ext\x20Hard
ID_VENDOR_ID=059b
ID_MODEL=Disk
ID_MODEL_ENC=\x20Disk\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20\x20
ID_MODEL_ID=0377
ID_REVISION=0000
ID_SERIAL=Ext_Hard_Disk_S07I250200001425-0:0
ID_SERIAL_SHORT=S07I250200001425
ID_TYPE=disk
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0
ID_FS_UUID=cc220906-2acc-3fd4-a07a-f6e01c604054
ID_FS_UUID_ENC=cc220906-2acc-3fd4-a07a-f6e01c604054
ID_FS_LABEL=Mac_HFS+
ID_FS_LABEL_ENC=Mac\x20HFS+
ID_FS_TYPE=hfsplus
ID_FS_USAGE=filesystem
DKD_PARTITION=1
DKD_PARTITION_SCHEME=mbr
DKD_PARTITION_NUMBER=2
DKD_PARTITION_TYPE=0xaf
DKD_PARTITION_SIZE=32769515520
DKD_PRESENTATION_NOPOLICY=0
MAJOR=8
MINOR=34
DEVLINKS=/dev/disk/by-id/usb-Ext_Hard_Disk_S07I250200001425-0:0-part2 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:3:1.0-scsi-0:0:0:0-part2 /dev/disk/by-uuid/cc220906-2acc-3fd4-a07a-f6e01c604054 /dev/disk/by-label/Mac\x20HFS+