Hey wayoda, you're right :), it stands for BlueTooh Low Energy.
I just followed this tutorial (Turn your Arduino YUN into an iBeacon transmitter) to install the software needed, and the script only does the work of starting an iBeacon service. The code looks like this:
#!/bin/ash
hciconfig hci0 up
hcitool -i hci0 cmd 0x08 0x0008 1E 02 01 1A 1A FF 4C 00 02 15 D2 8C 3C 18 94 5A 49 B5 80 9F D5 C0 9B A0 95 E6 00 00 00 00 C9 00
hciconfig hci0 leadv
hciconfig hci0 noscan
That tutorial explains in a good way how to achieve everything just fine. Anyway, my problem is that I want Yun to start this service whenever it is turned on, but I also intend to use Temboo as a logging service for my beacons. The script works as well as the sketch, the only problem is that the sketch do not run again on restart.