1. Go to the tomcat configuration file and see what the port of tomcat is. The configuration file is generally: $CATALINA_HOME/conf/server. Look for it.

< connector port = "8080" redirect port = "8443" connectiontimeout = "20000" protocol = "http/1.1"/> this line. Here, the port is 8080.

2. Use the netstat command to check the occupancy.

Netstat -ap |grep 8080 // Find out whether the tomcat port is occupied.

3. Others

Netstat -tln // means to digitally view the port you are listening on.

Netstat -ap // View the ports occupied by all applications.