title: Tomcat and CATALINA_HOME
body: <p>I am messing with Tomcat server and I think some strange thing happened. I downloaded Tomcat 7 from apache website (not an RPM but tar.gz). As I understand there should be CATALINA_HOME and CATALINA_BASE environment variables set, but when I do export on my terminal I can't see any of them, but server starts fine through bin/startup.sh and it even says</p>
  
  <pre><code>Using CATALINA_BASE:   /home/andrzej/apache-tomcat-7.0.25
  Using CATALINA_HOME:   /home/andrzej/apache-tomcat-7.0.25
  Using CATALINA_TMPDIR: /home/andrzej/apache-tomcat-7.0.25/temp
  Using JRE_HOME:        /usr/lib/jvm/jre
  Using CLASSPATH:       /home/andrzej/apache-tomcat-7.0.25/bin/bootstrap.jar:/home/andrzej /apache-tomcat-7.0.25/bin/tomcat-juli.jar
  </code></pre>
  
  <p>I think that the other day variables were set, but now I tried to use them with keytool to generate certificate and I noticed they are not there. 
  Am I missing something, because even if I can't see them everything works fine (startup/shutdown and eclipse with tomcat)?</p>