The executable files were built on Wed Feb 22 08:33:26 EST 2017 The version number of each individual application may be found in the appropriate documentation files in ./ncbi/doc/ uname -a ouput is: Linux coremake1 2.6.32-642.13.1.el6.x86_64 #1 SMP Wed Jan 11 20:56:24 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux