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

UDEV  [1277117850.372776] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6
SUBSYSTEM=usb
DEVNAME=/dev/bus/usb/001/004
DEVTYPE=usb_device
PRODUCT=1bcf/c31/10f
TYPE=0/0/0
BUSNUM=001
DEVNUM=004
SEQNUM=1596
ID_VENDOR=Sunplus_Innovation_Technology.
ID_VENDOR_ENC=Sunplus\x20Innovation\x20Technology.
ID_VENDOR_ID=1bcf
ID_MODEL=USB_to_Serial-ATA_bridge
ID_MODEL_ENC=USB\x20to\x20Serial-ATA\x20bridge
ID_MODEL_ID=0c31
ID_REVISION=010f
ID_SERIAL=Sunplus_Innovation_Technology._USB_to_Serial-ATA_bridge_FFFFFFFE0D00000000901160038897
ID_SERIAL_SHORT=FFFFFFFE0D00000000901160038897
ID_BUS=usb
ID_USB_INTERFACES=:080650:
MAJOR=189
MINOR=3
DEVLINKS=/dev/char/189:3

UDEV  [1277117850.437985] add      /module/usb_storage (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/usb_storage
SUBSYSTEM=module
SEQNUM=1598

UDEV  [1277117850.439942] add      /bus/usb/drivers/usb-storage (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/usb/drivers/usb-storage
SUBSYSTEM=drivers
SEQNUM=1601

UDEV  [1277117850.441085] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0 (usb)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0
SUBSYSTEM=usb
DEVTYPE=usb_interface
PRODUCT=1bcf/c31/10f
TYPE=0/0/0
INTERFACE=8/6/80
MODALIAS=usb:v1BCFp0C31d010Fdc00dsc00dp00ic08isc06ip50
SEQNUM=1597

UDEV  [1277117850.443413] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6
SUBSYSTEM=scsi
DEVTYPE=scsi_host
SEQNUM=1599

UDEV  [1277117850.444856] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/scsi_host/host6 (scsi_host)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/scsi_host/host6
SUBSYSTEM=scsi_host
SEQNUM=1600

UDEV  [1277117855.446118] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0
SUBSYSTEM=scsi
DEVTYPE=scsi_target
SEQNUM=1602

UDEV  [1277117855.447055] add      /kernel/slab/:dt-0000512 (slab)
UDEV_LOG=3
ACTION=add
DEVPATH=/kernel/slab/:dt-0000512
SUBSYSTEM=slab
SEQNUM=1604

UDEV  [1277117855.449542] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0 (scsi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0
SUBSYSTEM=scsi
DEVTYPE=scsi_device
MODALIAS=scsi:t-0x05
SEQNUM=1603

UDEV  [1277117855.597776] add      /devices/virtual/bdi/11:0 (bdi)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/virtual/bdi/11:0
SUBSYSTEM=bdi
SEQNUM=1606

UDEV  [1277117855.601497] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/scsi_generic/sg1 (scsi_generic)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/scsi_generic/sg1
SUBSYSTEM=scsi_generic
DEVNAME=/dev/sg1
SEQNUM=1608
MAJOR=21
MINOR=1
DEVLINKS=/dev/char/21:1

UDEV  [1277117855.603533] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/scsi_device/6:0:0:0 (scsi_device)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/scsi_device/6:0:0:0
SUBSYSTEM=scsi_device
SEQNUM=1607

UDEV  [1277117855.605229] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/bsg/6:0:0:0 (bsg)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/bsg/6:0:0:0
SUBSYSTEM=bsg
DEVNAME=/dev/bsg/6:0:0:0
SEQNUM=1609
MAJOR=253
MINOR=1
DEVLINKS=/dev/char/253:1

UDEV  [1277117856.094099] add      /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/block/sr0 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0/block/sr0
SUBSYSTEM=block
DEVNAME=/dev/sr0
DEVTYPE=disk
SEQNUM=1605
ID_CDROM=1
ID_CDROM_CD_R=1
ID_CDROM_CD_RW=1
ID_CDROM_DVD=1
ID_CDROM_DVD_R=1
ID_CDROM_DVD_RW=1
ID_CDROM_DVD_RAM=1
ID_CDROM_DVD_PLUS_R=1
ID_CDROM_DVD_PLUS_RW=1
ID_CDROM_DVD_PLUS_R_DL=1
ID_CDROM_DVD_PLUS_RW_DL=1
ID_CDROM_MRW=1
ID_CDROM_MRW_W=1
ID_VENDOR=Slimtype
ID_VENDOR_ENC=Slimtype
ID_VENDOR_ID=1bcf
ID_MODEL=DVD_A_DS8A2L
ID_MODEL_ENC=DVD\x20A\x20\x20DS8A2L\x20\x20\x20
ID_MODEL_ID=0c31
ID_REVISION=7P5D
ID_SERIAL=Slimtype_DVD_A_DS8A2L_FFFFFFFE0D00000000901160038897-0:0
ID_SERIAL_SHORT=FFFFFFFE0D00000000901160038897
ID_TYPE=cd
ID_INSTANCE=0:0
ID_BUS=usb
ID_USB_INTERFACES=:080650:
ID_USB_INTERFACE_NUM=00
ID_USB_DRIVER=usb-storage
ID_PATH=pci-0000:00:04.1-usb-0:6:1.0-scsi-0:0:0:0
ACL_MANAGE=1
GENERATED=1
UDISKS_PRESENTATION_NOPOLICY=0
MAJOR=11
MINOR=0
DEVLINKS=/dev/block/11:0 /dev/scd0 /dev/disk/by-id/usb-Slimtype_DVD_A_DS8A2L_FFFFFFFE0D00000000901160038897-0:0 /dev/disk/by-path/pci-0000:00:04.1-usb-0:6:1.0-scsi-0:0:0:0 /dev/cdrom2 /dev/cdrw2 /dev/dvd2 /dev/dvdrw2

UDEV  [1277117859.625679] change   /devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0 (scsi)
UDEV_LOG=3
ACTION=change
DEVPATH=/devices/pci0000:00/0000:00:04.1/usb1/1-6/1-6:1.0/host6/target6:0:0/6:0:0:0
SUBSYSTEM=scsi
SDEV_MEDIA_CHANGE=1
DEVTYPE=scsi_device
DRIVER=sr
MODALIAS=scsi:t-0x05
SEQNUM=1610