Jenkins Installation - On ubuntu

sudo apt-get  update  sudo apt-get  install  openjdk-8-jdk  sudo java -version sudo wget -qO - https://pkg.jenkins.io/debian-stable/jenkins....

• sudo apt-get  update 
• sudo apt-get  install  openjdk-8-jdk 
• sudo java -version
• sudo wget -qO - https://pkg.jenkins.io/debian-stable/jenkins.io.key | apt-key add -
• sudo sh -c 'echo deb http://pkg.jenkins.io/debian-stable binary/ > /etc/apt/sources.list.d/jenkins.list'
• sudo apt-get update

NOTE:- IN CASE IF YOU GET A CERTIFICATE ERROR THEN RUN THE BELOW COMMAND
               sudo apt install ca-certificates

• sudo apt-get install jenkins
• 
  
• systemctl status jenkins
• 
  
• sudo ufw allow 8080
• give sudo permisssion to jenkins user 
•  vi /etc/sudoers 
• Add below entry
•  jenkins ALL=(ALL) NOPASSWD: ALL 
• Save the file