Enable/disable power on Raspberry Pi USB ports + Ethernet

rpi-usb.sh

#!/bin/sh

SOC_USB=/sys/devices/platform/soc/20980000.usb

if [ ! -d $SOC_USB ];
  then
    SOC_USB=/sys/devices/platform/soc/3f980000.usb # Raspberry Pi 3
fi

BUSPOWER=$SOC_USB/buspower

is_usb_power_on ()
{
  cat $BUSPOWER | grep "Bus Power = 0x1" >/dev/null
}

case $1 in
  stop)
    if is_usb_power_on
      then
        echo 0x0 > $BUSPOWER 
    fi
  ;;
  start)
    if ! is_usb_power_on
      then
        echo 0x1 > $BUSPOWER
    fi
  ;;
  status)
    if is_usb_power_on
      then
        echo "USB power is on"
      else
        echo "USB power is off"
    fi
  ;;
  *)
    echo "Usage: $0 start|stop|status" >&2
    exit 2
  ;;
esac

exit 0