title: cqlsh command line can't be opened in Apache Cassandra
body: <p>I have installed Cassandra by following this tutorial: <a href="http://wiki.apache.org/cassandra/GettingStarted#fnref-cac370d9c0a5bbfcc8ba5b7e5a5e742501e0181d" rel="nofollow">here</a>. 
  In the <code>bin</code> directory, there is cqlsh, that I am supposed to open to write command in order to create Table, Column etc..</p>
  
  <p>But the <code>cqlsh</code> executable file isn't opening. If I click it, a pop up windows (looks like a shell) appears and quickly disappears. Where is my error and how can enable this file to open?</p>