command to start jenkins in ubuntu code example
Example: install jenkins on ubuntu
## Install java
sudo apt update && sudo apt install openjdk-8-jdk -y
## Install Jenkins
wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ > \
/etc/apt/sources.list.d/jenkins.list'
sudo apt-get update && sudo apt-get install jenkins -y