Hi Michael,
[quote user="Michael Saunby"]
As someone suggested earlier gatttool from the Linux bluez tools is able to talk to SensorTag. I've put a simple example of this - just reads temperature - up on github here https://github.com/msaunby/ble-sensor-pi and written a short blog post about using this code on the RaspberryPi at http://mike.saunby.net/2013/04/raspberry-pi-and-ti-cc2541-sensortag.html
[/quote]
I've put a link to your project up on the BLE wiki. Please let me know if this is not OK.
Aslak