How to test Beaglebone Black (BBB) System Versions

Checking The Image Version

# cat /etc/dogtag                             
Cloud9 GNOME Image 2013.05.08
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Check The angstrom Version

# cat /etc/angstrom-version  
Angstrom v2012.12 (Core edition)
Built from branch: danny
Revision: abdca5ed77a803e9eb8fdacd4977956755276c3b
Target system: arm-angstrom-linux-gnueabi
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For More 

# cat /etc/angstrom-build-info