Install Jenkins for Ubuntu operation system

https://jenkins.io/zh/doc/boo...

1. install java
2. wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
3. add the following entry in your /etc/apt/sources.list
deb https://pkg.jenkins.io/debian-stable binary/
4. sudo apt-get update
5. sudo apt-get install jenkins
6. set environment path

   export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/
   export JRE_HOME=/usr/lib/jvm/java-8-openjdk-amd64/jre/
   export CLASSPATH=$JRE_HOME/lib:$CLASSPATH
   export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

1. source /etc/profile
2. java -jar /usr/share/jenkins/jenkins.war --httpPort=1080
3. restart jenkins
   /etc/init.d/jenkins restart
4. open in browser
   127.0.0.1:1080
5. login jenkins
6. install recommended plugins
7. create admin user
8. config jenkins
9. generate public key for git repositories
   1). cd ~/.ssh
   2). ssh-keygen // this will generate id_dsa and id_dsa.pub
   3). copy the text in id_dsa.pub to git -> settings -> SSH Keys -> key
10. Set up new item -> source code management -> git -> repositories -> credentials -> add -> SSH Username with private key -> copy public key here.