anchor.diff:  
   The {es} version is shown in its folder name:
   
  -[source]
  +[source, bash]
   ----
  -# ls
  +$ ls
   elasticsearch-0.90.3
   ----
   
  
positive.code: 
  Since Cascading is a library, the best way to find out the target version is to look at its file name:
  
  [source]
  ----
  # ls
  cascading-2.1.6.jar
  ----
  
  
negative.code: 
  To check the version of Hadoop, one can refer either to its folder or jars (which contain the version in their names) or from the command line:
  
  [source, bash]
  ----
  $ bin/hadoop version
  Hadoop 1.2.1
  ----
  
  