#scan for devices that are discoverable
hcitool scan

#list connected devices
hcitool con

#######Bluetooth audio sync connection#############
bluetoothctl
 power on
 pair <address>
 trust <address>
 connect <address>

#####################reset connection##############
echo "power off"|bluetoothctl
echo "power on"|bluetoothctl
echo "connect <address>"|bluetoothctl