root@neutrino:~# udevmonitor --env
udevmonitor will print the received events for:
UDEV the event which udev sends out after rule processing
UEVENT the kernel uevent

UEVENT[1202405451.459658] add      /devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0 (pci)
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
SUBSYSTEM=pci
PHYSDEVBUS=pci
PCI_CLASS=20000
PCI_ID=168C:0013
PCI_SUBSYS_ID=168C:1026
PCI_SLOT_NAME=0000:04:00.0
MODALIAS=pci:v0000168Cd00000013sv0000168Csd00001026bc02sc00i00
SEQNUM=1432

UEVENT[1202405451.483468] add      /module/ath_pci (module)
ACTION=add
DEVPATH=/module/ath_pci
SUBSYSTEM=module
SEQNUM=1433

UEVENT[1202405451.484198] add      /bus/pci/drivers/ath_pci (drivers)
ACTION=add
DEVPATH=/bus/pci/drivers/ath_pci
SUBSYSTEM=drivers
SEQNUM=1434

UDEV  [1202405451.486254] add      /module/ath_pci (module)
UDEV_LOG=3
ACTION=add
DEVPATH=/module/ath_pci
SUBSYSTEM=module
SEQNUM=1433
UDEVD_EVENT=1

UDEV  [1202405451.487969] add      /bus/pci/drivers/ath_pci (drivers)
UDEV_LOG=3
ACTION=add
DEVPATH=/bus/pci/drivers/ath_pci
SUBSYSTEM=drivers
SEQNUM=1434
UDEVD_EVENT=1

UEVENT[1202405451.778249] add      /class/net/wifi0 (net)
ACTION=add
DEVPATH=/class/net/wifi0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=wifi0
IFINDEX=25
SEQNUM=1435

UEVENT[1202405451.778592] add      /class/net/ath0 (net)
ACTION=add
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=26
SEQNUM=1436

UDEV  [1202405451.782216] add      /devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0 (pci)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
SUBSYSTEM=pci
PHYSDEVBUS=pci
PCI_CLASS=20000
PCI_ID=168C:0013
PCI_SUBSYS_ID=168C:1026
PCI_SLOT_NAME=0000:04:00.0
MODALIAS=pci:v0000168Cd00000013sv0000168Csd00001026bc02sc00i00
SEQNUM=1432
UDEVD_EVENT=1

UDEV  [1202405451.782275] add      /class/net/wifi0 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/wifi0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=wifi0
IFINDEX=25
SEQNUM=1435
UDEVD_EVENT=1

UDEV  [1202405453.845395] add      /class/net/ath0 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=26
SEQNUM=1436
UDEVD_EVENT=1

UEVENT[1202405460.439213] remove   /class/net/ath0 (net)
ACTION=remove
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=26
SEQNUM=1437

UDEV  [1202405460.440154] remove   /class/net/ath0 (net)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=26
SEQNUM=1437
UDEVD_EVENT=1

UEVENT[1202405507.620958] add      /class/net/ath0 (net)
ACTION=add
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=27
SEQNUM=1438

UEVENT[1202405507.659863] move     /class/net/ath1 (net)
ACTION=move
DEVPATH=/class/net/ath1
SUBSYSTEM=net
DEVPATH_OLD=/class/net/ath0
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=27
SEQNUM=1439

UDEV  [1202405509.720920] add      /class/net/ath1 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/ath1
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=27
SEQNUM=1438
UDEVD_EVENT=1
COMMENT=PCI device 0x168c:0x0013 (ath_pci)
MATCHIFTYPE=1
INTERFACE_NEW=ath1
INTERFACE_OLD=ath0

UDEV  [1202405509.722673] move     /class/net/ath1 (net)
UDEV_LOG=3
ACTION=move
DEVPATH=/class/net/ath1
SUBSYSTEM=net
DEVPATH_OLD=/class/net/ath0
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=27
SEQNUM=1439
UDEVD_EVENT=1

UEVENT[1202405521.440266] remove   /class/net/ath1 (net)
ACTION=remove
DEVPATH=/class/net/ath1
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=27
SEQNUM=1440

UDEV  [1202405521.441283] remove   /class/net/ath1 (net)
UDEV_LOG=3
ACTION=remove
DEVPATH=/class/net/ath1
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=27
SEQNUM=1440
UDEVD_EVENT=1

UEVENT[1202405523.581757] add      /class/net/ath0 (net)
ACTION=add
DEVPATH=/class/net/ath0
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath0
IFINDEX=28
SEQNUM=1441

UEVENT[1202405523.584987] move     /class/net/ath1 (net)
ACTION=move
DEVPATH=/class/net/ath1
SUBSYSTEM=net
DEVPATH_OLD=/class/net/ath0
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=28
SEQNUM=1442

UDEV  [1202405525.649226] add      /class/net/ath1 (net)
UDEV_LOG=3
ACTION=add
DEVPATH=/class/net/ath1
SUBSYSTEM=net
PHYSDEVPATH=/devices/pci0000:00/0000:00:1e.0/0000:03:01.0/0000:04:00.0
PHYSDEVBUS=pci
PHYSDEVDRIVER=ath_pci
INTERFACE=ath1
IFINDEX=28
SEQNUM=1441
UDEVD_EVENT=1
INTERFACE_OLD=ath0