The executable files were built on Wed Feb 4 14:45:21 EST 2015 The version number of each individual application may be found in the appropriate documentation files in ./ncbi/doc/ uname -a ouput is: Linux coremake1 2.6.32-504.1.3.el6.x86_64 #1 SMP Tue Nov 11 17:57:25 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux