> ls -R /sys/devices /sys/devices: pci0000:00 /sys/devices/pci0000:00: 0000:00:19.0 /sys/devices/pci0000:00/0000:00:19.0: class config device driver irq net power vendor /sys/devices/pci0000:00/0000:00:19.0/net: eth0 /sys/devices/pci0000:00/0000:00:19.0/net/eth0: address broadcast carrier device features flags mtu power statistics ...