Installation of Apache Tomcat 8.5 on Ubuntu 20.04

Step by step Installation of Apache Tomcat 8.5 on Ubuntu 20.04
For Installation of Apache Tomcat 8.5 do the following;
Step 1: For Installation of Apache Tomcat 8.5 Download the and extract the Tomcat package,
cd /opt
sudo wget http://mirrors.estointernet.in/apache/tomcat/tomcat-8/v8.5.50/bin/apache-tomcat-8.5.50.tar.gz
If the above mentioned link not working, visit Tomcat website and download the package.
sudo tar xvzf apache-tomcat-8.5.50.tar.gz
Step 2 : Rename folder “apache-tomcat-8.5.50” to “tomcat“
sudo mv apache-tomcat-8.5.50 tomcat
Step 3: Delete the Tomcat package file from /opt folder
sudo rm apache-tomcat-8.5.50.tar.gz
Open the following file,
sudo leafpad /etc/profile
Setup environment variables
Environment variables to find JAVA.
Add following lines at the bottom of the file,
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64
export CATALINA_HOE=/opt/tomcat
Running Tomcat automatically
You can set up to start the Tomcat server start automatically at the time of system turn on.
Open following file in a Terminal,
sudo vim /etc/init.d/tomcat
Add following lines in the file,
#!/bin/bash
### BEGIN INIT INFO
# Provides: tomcat8
# Required-Start: $network
# Required-Stop: $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Start/Stop Tomcat server
### END INIT INFO
PATH=/sbin:/bin:/usr/sbin:/usr/bin
start() {
sh /opt/tomcat/bin/startup.sh
}
stop() {
sh /opt/tomcat/bin/shutdown.sh
}
case $1 in
start|stop) $1;;
restart) stop; start;;
*) echo "Run as $0 <start|stop|restart>"; exit 1;;
esac
save and close the file.
Apply the following commands too;
sudo chmod +x /etc/init.d/tomcat
sudo update-rc.d tomcat defaults
Start Tomcat server,
sudo service tomcat start
Now you can start and stop Tomcat server using the following commands;
sudo service tomcat start
sudo service tomcat stop
sudo service tomcat restart