Inside of it, there will be some folders and symbolic links
work -> ../../cache/tomcat7
logs -> ../../log/tomcat7
conf -> /etc/tomcat7
Folders bin and lib will be in /usr/share/tomcat7
Following the install process described in Installing Liferay on Tomcat 7 you will see, in the first sentence:
Liferay Home is one folder above Tomcat’s install location.If you start Liferay without changing anything, just like the tutorial says, Liferay will create its folders in the Liferay Home, which is, by default, /var/lib/.
Having application data folders inside /var/lib is not a good idea, just like Dave Kliczbor commented on the comments section on that page.
In order to "fix" that behaviour, create the file /var/lib/tomcat7/webapps/ROOT/WEB-INF/classes/portal-ext.properties and add the line
liferay.home=/var/lib/tomcat7Create the folders /var/lib/tomcat7/data and /var/lib/tomcat7/deploy and make them writeable for the user tomcat7 running
sudo chown -R tomcat7:tomcat7 /var/lib/tomcat7/data
sudo chown -R tomcat7:tomcat7 /var/lib/tomcat7/deploy
That's enough to have your Liferay server ready to run.