How to Install R studio and Tomcat in Ubuntu


How to install R Studio in Ubuntu.

Installing 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-get install 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: 
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
  • 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
    bin$ 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.  

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