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

KERNEL[53025.102963] online   /devices/system/cpu/cpu2 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28066
SUBSYSTEM=cpu

UDEV  [53025.126555] online   /devices/system/cpu/cpu2 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28066
SUBSYSTEM=cpu
USEC_INITIALIZED=25103421

KERNEL[53025.415919] offline  /devices/system/cpu/cpu2 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28067
SUBSYSTEM=cpu

UDEV  [53025.416072] offline  /devices/system/cpu/cpu2 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28067
SUBSYSTEM=cpu
USEC_INITIALIZED=406091

KERNEL[53027.036978] change   /devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery (power_supply)
ACTION=change
DEVPATH=/devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery
POWER_SUPPLY_CAPACITY=91
POWER_SUPPLY_CHARGE_EMPTY=125580
POWER_SUPPLY_CHARGE_FULL=2093000
POWER_SUPPLY_CHARGE_NOW=2032001
POWER_SUPPLY_CHARGE_TYPE=Fast
POWER_SUPPLY_CURRENT_NOW=-29300
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_STATUS=Charging
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_TEMP=306
POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4360000
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3200000
POWER_SUPPLY_VOLTAGE_NOW=4219782
SEQNUM=28068
SUBSYSTEM=power_supply

UDEV  [53027.079584] change   /devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery (power_supply)
ACTION=change
DEVPATH=/devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery
POWER_SUPPLY_CAPACITY=91
POWER_SUPPLY_CHARGE_EMPTY=125580
POWER_SUPPLY_CHARGE_FULL=2093000
POWER_SUPPLY_CHARGE_NOW=2032001
POWER_SUPPLY_CHARGE_TYPE=Fast
POWER_SUPPLY_CURRENT_NOW=-29300
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_STATUS=Charging
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_TEMP=306
POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4360000
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3200000
POWER_SUPPLY_VOLTAGE_NOW=4219782
SEQNUM=28068
SUBSYSTEM=power_supply
USEC_INITIALIZED=35574

KERNEL[53034.502658] online   /devices/system/cpu/cpu2 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28069
SUBSYSTEM=cpu

UDEV  [53034.528112] online   /devices/system/cpu/cpu2 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28069
SUBSYSTEM=cpu
USEC_INITIALIZED=34502902

KERNEL[53034.816041] offline  /devices/system/cpu/cpu2 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28070
SUBSYSTEM=cpu

UDEV  [53034.816163] offline  /devices/system/cpu/cpu2 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28070
SUBSYSTEM=cpu
USEC_INITIALIZED=805969

KERNEL[53037.036490] change   /devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery (power_supply)
ACTION=change
DEVPATH=/devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery
POWER_SUPPLY_CAPACITY=91
POWER_SUPPLY_CHARGE_EMPTY=125580
POWER_SUPPLY_CHARGE_FULL=2093000
POWER_SUPPLY_CHARGE_NOW=2032024
POWER_SUPPLY_CHARGE_TYPE=Fast
POWER_SUPPLY_CURRENT_NOW=-32100
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_STATUS=Charging
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_TEMP=306
POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4360000
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3200000
POWER_SUPPLY_VOLTAGE_NOW=4220667
SEQNUM=28071
SUBSYSTEM=power_supply

UDEV  [53037.075281] change   /devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery (power_supply)
ACTION=change
DEVPATH=/devices/platform/msm_ssbi.0/pm8921-core/pm8921-charger/power_supply/battery
POWER_SUPPLY_CAPACITY=91
POWER_SUPPLY_CHARGE_EMPTY=125580
POWER_SUPPLY_CHARGE_FULL=2093000
POWER_SUPPLY_CHARGE_NOW=2032024
POWER_SUPPLY_CHARGE_TYPE=Fast
POWER_SUPPLY_CURRENT_NOW=-32100
POWER_SUPPLY_HEALTH=Good
POWER_SUPPLY_NAME=battery
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_STATUS=Charging
POWER_SUPPLY_TECHNOLOGY=Li-ion
POWER_SUPPLY_TEMP=306
POWER_SUPPLY_VOLTAGE_MAX_DESIGN=4360000
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=3200000
POWER_SUPPLY_VOLTAGE_NOW=4220667
SEQNUM=28071
SUBSYSTEM=power_supply
USEC_INITIALIZED=35055

KERNEL[53040.712974] online   /devices/system/cpu/cpu2 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28072
SUBSYSTEM=cpu

KERNEL[53040.713035] online   /devices/system/cpu/cpu3 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu3
SEQNUM=28073
SUBSYSTEM=cpu

UDEV  [53040.748499] online   /devices/system/cpu/cpu2 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28072
SUBSYSTEM=cpu
USEC_INITIALIZED=40702597

UDEV  [53040.750544] online   /devices/system/cpu/cpu3 (cpu)
ACTION=online
DEVPATH=/devices/system/cpu/cpu3
SEQNUM=28073
SUBSYSTEM=cpu
USEC_INITIALIZED=40747004

KERNEL[53041.006610] offline  /devices/system/cpu/cpu3 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu3
SEQNUM=28074
SUBSYSTEM=cpu

UDEV  [53041.011554] offline  /devices/system/cpu/cpu3 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu3
SEQNUM=28074
SUBSYSTEM=cpu
USEC_INITIALIZED=6397

KERNEL[53041.025655] offline  /devices/system/cpu/cpu2 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28075
SUBSYSTEM=cpu

UDEV  [53041.025838] offline  /devices/system/cpu/cpu2 (cpu)
ACTION=offline
DEVPATH=/devices/system/cpu/cpu2
SEQNUM=28075
SUBSYSTEM=cpu
USEC_INITIALIZED=20466