To not have to install websites within tomcatX/webapps do the following. I chose to install connected to localhost.  The name for this site is fileSystem so:

• create a fileSystem.xml file for this app and place it in %TOMCAT_HOME%\conf\Catalina\localhost
• the contents of fileSystem.xml is

<Context displayName="fileSystem" 
     docBase="/home/roye/tomcat/fileSystem"
     path="/fileSystem"
     reloadable="true" />

• docBase contains the traditional directory structure
• stop and start, or reload tomcat
• the resulting URL is http://localhost:8080/fileSystem
• to link to servlets within a html page the link is e.g.

  • <a href="servlets/b">B</a>