How to Install R Studio and Tomcat in Ubuntu

How to install R Studio in Ubuntu. Intsalling R Studio in Ubuntu we have to  follow the 3 steps for installation those are listed. Laks Tutorial follow the simple and basic steps for installation

Step1:Goto terminal in ubuntu type sudo apt-getupdate press enter

Step 2: sudo apt-getinstall r-base press enter

Step 3:  Now download the  software R-Studio (32-bit) here or 64-bit

sudo dpkg -i <package name>   OR Install this software through Ubuntu Software Center.

Now you have successfully installed

Installation of Tomcat in Ubuntu
Before Tomcat installation in ubuntu first you need to install java
Step 1:

sudo apt-get update

sudo apt-get install openjdk-7-jdk

Download Tomcat package from apache site: 

http://www.us.apache.org/dist/tomcat/tomcat-8/v8.0.29/bin/apache-tomcat-8.0.29.tar.gz

                                                            

After downloading, extract the file and copy the folder to 'web' folder in 'home' folder (create 'web' folder in 'home' folder).

Step 2:  Now path setup in .bashrc file

$ gedit .bashrc

go to end of the file and type

export CATALINA_HOME=/home/user/web/apache-tomcat-8.0.29

export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-i386

save and exit

Step 3:

Once the path setup complete, now run [start] tomcat service.

Go to the 'bin' folder of the tomcat

(ex.: /home/user/web/apache-tomcat-8.0.29/bin)

bin$ sh startup.sh

To check open browser and open localhost:8080, click on 'Manager App' button.

user error

Step 4:

Setting up user for accessing App

Now open 'tomcat-users.xml' file in 'conf' folder of tomcat folder.

copy below text at <tomcat-users> field.

<role rolename="manager-gui"/>

<user username="admin" password="admin" roles="manager-gui"/>

save and exit

Now restart tomcat service

bin$ sh shutdown.sh
bin$ sh startup.sh

To check open browser and open localhost:8080, click on 'Manager App'
button then type "admin" in User Name and Password fields.

Now you have successfully install and configuring the tomcat in Ubuntu.