#!/bin/bash

devmac=00:11:22:33:44:55

adapter=$(dbus-send --system --print-reply --dest=org.bluez / org.bluez.Manager.ListAdapters | awk -F'"' '/at/ {print $2}')
device=$(dbus-send --system --print-reply --dest=org.bluez ${adapter} org.bluez.Adapter.FindDevice string:${devmac} | sed -ne 's/^.*object path //p' | sed 's/"//g')

dbus-send --system --type=method_call --print-reply --dest=org.bluez ${device} org.bluez.Input.Disconnect >/dev/null
[ $? -eq 0 ] && echo "device ${devmac} successfully disconnected"