BeagleBone Black Angstrom bitbake not found

edit

I've installed the Angstrom and beagle-ros project to be able to run the MPU 9150 project on BeagleBone Black. (I used the image of Angstrom provided from beaglebone image list)

Beagle Ros

Beagle Bone MPU 9150

I reached the stage where I need to run bitbake. But I am getting error message saying: bitbake command not found. I used find / -name "bitbake" to find it on the system thinking that the path variable is not pointing there but was unable to find it. How should I resolve the problem?