udevmonitor prints the received event from the kernel [UEVENT] and the event which udev sends out after rule processing [UDEV] UEVENT[1174155780.447342] add@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2721 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEV [1174155780.449336] add@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2721 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEVD_EVENT=1 UEVENT[1174155780.475028] add@/class/mmc_host/mmc1 ACTION=add DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2722 UDEV [1174155780.515242] add@/class/mmc_host/mmc1 UDEV_LOG=3 ACTION=add DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2722 UDEVD_EVENT=1 UEVENT[1174155840.238029] remove@/class/mmc_host/mmc1 UDEV [1174155840.238029] remove@/class/mmc_host/mmc1 UDEV_LOG=3 ACTION=remove DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2723 UDEVD_EVENT=1 UEVENT[1174155840.238278] remove@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 UDEV [1174155840.238278] remove@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 UDEV_LOG=3 ACTION=remove DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2724 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEVD_EVENT=1 UEVENT[1174155842.048176] add@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2725 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEV [1174155842.050021] add@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 UDEV_LOG=3 ACTION=add DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2725 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEVD_EVENT=1 UEVENT[1174155842.070126] add@/class/mmc_host/mmc1 ACTION=add DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2726 UDEV [1174155842.123866] add@/class/mmc_host/mmc1 UDEV_LOG=3 ACTION=add DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2726 UDEVD_EVENT=1 UEVENT[1174155857.071611] remove@/class/mmc_host/mmc1 ACTION=remove DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2727 UEVENT[1174155857.071634] remove@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 ACTION=remove DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2728 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEV [1174155857.072779] remove@/class/mmc_host/mmc1 UDEV_LOG=3 ACTION=remove DEVPATH=/class/mmc_host/mmc1 SUBSYSTEM=mmc_host SEQNUM=2727 UDEVD_EVENT=1 UDEV [1174155857.073252] remove@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 UDEV_LOG=3 ACTION=remove DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 SUBSYSTEM=tifm SEQNUM=2728 PHYSDEVBUS=tifm TIFM_CARD_TYPE=SD UDEVD_EVENT=1 UEVENT[1174155858.200263] add@/devices/pci0000:00/0000:00:1e.0/0000:05:06.2/tifm_sd0:1 ACTION=add DEVPATH=/devices/pci0000:00/00