udevmonitor prints the received event from the kernel [UEVENT] and the event which udev sends out after rule processing [UDEV] UEVENT[1175380865.400294] add@/devices/pci0000:00/0000:00:1d.7/usb5/5-1 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1 SUBSYSTEM=usb SEQNUM=2751 PHYSDEVBUS=usb DEVICE=/proc/bus/usb/005/011 PRODUCT=bc2/502/200 TYPE=0/0/0 UEVENT[1175380865.400340] add@/class/usb_endpoint/usbdev5.11_ep00 ACTION=add DEVPATH=/class/usb_endpoint/usbdev5.11_ep00 SUBSYSTEM=usb_endpoint SEQNUM=2752 MAJOR=254 MINOR=12 UEVENT[1175380865.400592] add@/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0 SUBSYSTEM=usb SEQNUM=2753 PHYSDEVBUS=usb DEVICE=/proc/bus/usb/005/011 PRODUCT=bc2/502/200 TYPE=0/0/0 INTERFACE=8/6/80 MODALIAS=usb:v0BC2p0502d0200dc00dsc00dp00ic08isc06ip50 UEVENT[1175380865.400649] add@/class/scsi_host/host8 ACTION=add DEVPATH=/class/scsi_host/host8 SUBSYSTEM=scsi_host SEQNUM=2754 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8 UEVENT[1175380865.400726] add@/class/usb_endpoint/usbdev5.11_ep01 ACTION=add DEVPATH=/class/usb_endpoint/usbdev5.11_ep01 SUBSYSTEM=usb_endpoint SEQNUM=2755 MAJOR=254 MINOR=13 UEVENT[1175380865.400731] add@/class/usb_endpoint/usbdev5.11_ep82 ACTION=add DEVPATH=/class/usb_endpoint/usbdev5.11_ep82 SUBSYSTEM=usb_endpoint SEQNUM=2756 MAJOR=254 MINOR=14 UEVENT[1175380865.400735] add@/class/usb_device/usbdev5.11 ACTION=add DEVPATH=/class/usb_device/usbdev5.11 SUBSYSTEM=usb_device SEQNUM=2757 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1 PHYSDEVBUS=usb PHYSDEVDRIVER=usb MAJOR=189 MINOR=522 UDEV [1175380865.408917] add@/class/usb_endpoint/usbdev5.11_ep82 UDEV_LOG=3 ACTION=add DEVPATH=/class/usb_endpoint/usbdev5.11_ep82 SUBSYSTEM=usb_endpoint SEQNUM=2756 MAJOR=254 MINOR=14 UDEVD_EVENT=1 DEVNAME=/dev/usbdev5.11_ep82 UDEV [1175380865.415317] add@/devices/pci0000:00/0000:00:1d.7/usb5/5-1 UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1 SUBSYSTEM=usb SEQNUM=2751 PHYSDEVBUS=usb DEVICE=/proc/bus/usb/005/011 PRODUCT=bc2/502/200 TYPE=0/0/0 UDEVD_EVENT=1 UDEV [1175380865.419683] add@/class/usb_endpoint/usbdev5.11_ep00 UDEV_LOG=3 ACTION=add DEVPATH=/class/usb_endpoint/usbdev5.11_ep00 SUBSYSTEM=usb_endpoint SEQNUM=2752 MAJOR=254 MINOR=12 UDEVD_EVENT=1 DEVNAME=/dev/usbdev5.11_ep00 UDEV [1175380865.420964] add@/class/usb_endpoint/usbdev5.11_ep01 UDEV_LOG=3 ACTION=add DEVPATH=/class/usb_endpoint/usbdev5.11_ep01 SUBSYSTEM=usb_endpoint SEQNUM=2755 MAJOR=254 MINOR=13 UDEVD_EVENT=1 DEVNAME=/dev/usbdev5.11_ep01 UDEV [1175380865.442343] add@/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0 UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0 SUBSYSTEM=usb SEQNUM=2753 PHYSDEVBUS=usb DEVICE=/proc/bus/usb/005/011 PRODUCT=bc2/502/200 TYPE=0/0/0 INTERFACE=8/6/80 MODALIAS=usb:v0BC2p0502d0200dc00dsc00dp00ic08isc06ip50 UDEVD_EVENT=1 UDEV [1175380865.450411] add@/class/scsi_host/host8 UDEV_LOG=3 ACTION=add DEVPATH=/class/scsi_host/host8 SUBSYSTEM=scsi_host SEQNUM=2754 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8 UDEVD_EVENT=1 UDEV [1175380865.480964] add@/class/usb_device/usbdev5.11 UDEV_LOG=3 ACTION=add DEVPATH=/class/usb_device/usbdev5.11 SUBSYSTEM=usb_device SEQNUM=2757 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1 PHYSDEVBUS=usb PHYSDEVDRIVER=usb MAJOR=189 MINOR=522 UDEVD_EVENT=1 USB_BUS=005 USB_DEV=011 DEVNAME=/dev/bus/usb/005/011 UEVENT[1175380870.948830] add@/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 SUBSYSTEM=scsi SEQNUM=2758 PHYSDEVBUS=scsi UEVENT[1175380870.949233] add@/class/scsi_disk/8:0:0:0 ACTION=add DEVPATH=/class/scsi_disk/8:0:0:0 SUBSYSTEM=scsi_disk SEQNUM=2759 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UEVENT[1175380870.976047] add@/block/sdb ACTION=add DEVPATH=/block/sdb SUBSYSTEM=block SEQNUM=2760 MINOR=16 MAJOR=8 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UEVENT[1175380870.976066] add@/block/sdb/sdb1 ACTION=add DEVPATH=/block/sdb/sdb1 SUBSYSTEM=block SEQNUM=2761 MINOR=17 MAJOR=8 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UEVENT[1175380870.976318] add@/class/scsi_device/8:0:0:0 ACTION=add DEVPATH=/class/scsi_device/8:0:0:0 SUBSYSTEM=scsi_device SEQNUM=2762 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UEVENT[1175380870.976324] add@/class/scsi_generic/sg3 ACTION=add DEVPATH=/class/scsi_generic/sg3 SUBSYSTEM=scsi_generic SEQNUM=2763 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd MAJOR=21 MINOR=3 UDEV [1175380871.005145] add@/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 SUBSYSTEM=scsi SEQNUM=2758 PHYSDEVBUS=scsi UDEVD_EVENT=1 UDEV [1175380871.006503] add@/class/scsi_disk/8:0:0:0 UDEV_LOG=3 ACTION=add DEVPATH=/class/scsi_disk/8:0:0:0 SUBSYSTEM=scsi_disk SEQNUM=2759 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UDEVD_EVENT=1 UDEV [1175380871.007580] add@/class/scsi_device/8:0:0:0 UDEV_LOG=3 ACTION=add DEVPATH=/class/scsi_device/8:0:0:0 SUBSYSTEM=scsi_device SEQNUM=2762 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UDEVD_EVENT=1 UDEV [1175380871.008309] add@/class/scsi_generic/sg3 UDEV_LOG=3 ACTION=add DEVPATH=/class/scsi_generic/sg3 SUBSYSTEM=scsi_generic SEQNUM=2763 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd MAJOR=21 MINOR=3 UDEVD_EVENT=1 DEVNAME=/dev/sg3 UDEV [1175380871.074261] add@/block/sdb UDEV_LOG=3 ACTION=add DEVPATH=/block/sdb SUBSYSTEM=block SEQNUM=2760 MINOR=16 MAJOR=8 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UDEVD_EVENT=1 ID_VENDOR=ST340063 ID_MODEL=2A ID_REVISION=3.04 ID_SERIAL=ST340063_2A_354E463136444332 ID_TYPE=disk ID_BUS=usb ID_PATH=pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0 DEVNAME=/dev/sdb DEVLINKS=/dev/disk/by-id/usb-ST340063_2A_354E463136444332 /dev/disk/by-path/pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0 UDEV [1175380871.099455] add@/block/sdb/sdb1 UDEV_LOG=3 ACTION=add DEVPATH=/block/sdb/sdb1 SUBSYSTEM=block SEQNUM=2761 MINOR=17 MAJOR=8 PHYSDEVPATH=/devices/pci0000:00/0000:00:1d.7/usb5/5-1/5-1:1.0/host8/target8:0:0/8:0:0:0 PHYSDEVBUS=scsi PHYSDEVDRIVER=sd UDEVD_EVENT=1 ID_VENDOR=ST340063 ID_MODEL=2A ID_REVISION=3.04 ID_SERIAL=ST340063_2A_354E463136444332 ID_TYPE=disk ID_BUS=usb ID_PATH=pci-0000:00:1d.7-usb-0:1:1.0-scsi-0:0:0:0 DEVNAME=/dev/s