http://blog.davidvassallo.me/2014/02/24/android-sl4a-bluetooth-to-linux-ubuntu/

android_to_ubuntu.py

from bluetooth import *
import sys
from subprocess import call

if sys.version < '3':
    input = raw_input

addr = None


print("no device specified.  Searching all nearby bluetooth devices for")
print("the SL4A service")

# search for the SL4A service
uuid = sys.argv[1]
service_matches = find_service( uuid = uuid, address = addr )

if len(service_matches) == 0:
    print("couldn't find the SL4A service =(")
    sys.exit(0)

first_match = service_matches[0]
port = first_match["port"]
name = first_match["name"]
host = first_match["host"]

print("connecting to \"%s\" on %s" % (name, host))

# Create the client socket
sock=BluetoothSocket( RFCOMM )
sock.connect((host, port))

print("connected.")
try:
    while True:
        data = sock.recv(1024)
        if len(data) == 0: break
        print("received %s" % data)
	print('--------------------')
	if (data == 'firefox\n'):
		call(["firefox",""])
        sock.send("recv: %s" % data)
except IOError:
    pass

print("disconnected")

sock.close()
print("all done")