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- $ udevadm info -a -p $(udevadm info -q path -n /dev/bus/usb/006/004)
- Udevadm info starts with the device specified by the devpath and then
- walks up the chain of parent devices. It prints for every device
- found, all possible attributes in the udev rules key format.
- A rule to match, can be composed by the attributes of the device
- and the attributes from one single parent device.
- looking at device '/devices/pci0000:00/0000:00:1d.0/usb6/6-1':
- KERNEL=="6-1"
- SUBSYSTEM=="usb"
- DRIVER=="usb"
- ATTR{configuration}==""
- ATTR{bNumInterfaces}==" 2"
- ATTR{bConfigurationValue}=="1"
- ATTR{bmAttributes}=="a0"
- ATTR{bMaxPower}=="100mA"
- ATTR{urbnum}=="12"
- ATTR{idVendor}=="1532"
- ATTR{idProduct}=="0101"
- ATTR{bcdDevice}=="2100"
- ATTR{bDeviceClass}=="00"
- ATTR{bDeviceSubClass}=="00"
- ATTR{bDeviceProtocol}=="00"
- ATTR{bNumConfigurations}=="1"
- ATTR{bMaxPacketSize0}=="8"
- ATTR{speed}=="12"
- ATTR{busnum}=="6"
- ATTR{devnum}=="4"
- ATTR{devpath}=="1"
- ATTR{version}==" 2.00"
- ATTR{maxchild}=="0"
- ATTR{quirks}=="0x0"
- ATTR{avoid_reset_quirk}=="0"
- ATTR{authorized}=="1"
- ATTR{manufacturer}=="Razer"
- ATTR{product}=="Razer Copperhead Laser Mouse"
- looking at parent device '/devices/pci0000:00/0000:00:1d.0/usb6':
- KERNELS=="usb6"
- SUBSYSTEMS=="usb"
- DRIVERS=="usb"
- ATTRS{configuration}==""
- ATTRS{bNumInterfaces}==" 1"
- ATTRS{bConfigurationValue}=="1"
- ATTRS{bmAttributes}=="e0"
- ATTRS{bMaxPower}==" 0mA"
- ATTRS{urbnum}=="96"
- ATTRS{idVendor}=="1d6b"
- ATTRS{idProduct}=="0001"
- ATTRS{bcdDevice}=="0303"
- ATTRS{bDeviceClass}=="09"
- ATTRS{bDeviceSubClass}=="00"
- ATTRS{bDeviceProtocol}=="00"
- ATTRS{bNumConfigurations}=="1"
- ATTRS{bMaxPacketSize0}=="64"
- ATTRS{speed}=="12"
- ATTRS{busnum}=="6"
- ATTRS{devnum}=="1"
- ATTRS{devpath}=="0"
- ATTRS{version}==" 1.10"
- ATTRS{maxchild}=="2"
- ATTRS{quirks}=="0x0"
- ATTRS{avoid_reset_quirk}=="0"
- ATTRS{authorized}=="1"
- ATTRS{manufacturer}=="Linux 3.3.5-gentoo uhci_hcd"
- ATTRS{product}=="UHCI Host Controller"
- ATTRS{serial}=="0000:00:1d.0"
- ATTRS{authorized_default}=="1"
- looking at parent device '/devices/pci0000:00/0000:00:1d.0':
- KERNELS=="0000:00:1d.0"
- SUBSYSTEMS=="pci"
- DRIVERS=="uhci_hcd"
- ATTRS{vendor}=="0x8086"
- ATTRS{device}=="0x2934"
- ATTRS{subsystem_vendor}=="0x1043"
- ATTRS{subsystem_device}=="0x19a7"
- ATTRS{class}=="0x0c0300"
- ATTRS{irq}=="23"
- ATTRS{local_cpus}=="ff"
- ATTRS{local_cpulist}=="0-7"
- ATTRS{dma_mask_bits}=="32"
- ATTRS{consistent_dma_mask_bits}=="32"
- ATTRS{broken_parity_status}=="0"
- ATTRS{msi_bus}==""
- looking at parent device '/devices/pci0000:00':
- KERNELS=="pci0000:00"
- SUBSYSTEMS==""
- DRIVERS==""
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