[Update Jenkins from terminal] #jenkins

bash.sh

    # as sudoer
    # download new .war file from http://updates.jenkins-ci.org/download
    cd /tmp
    wget -O jenkins-{version}.war http://updates.jenkins-ci.org/download/war/{version}/jenkins.war

    # move to libraries
    mv jenkins-{version}.war /usr/lib/jenkins-{version}.war

    # stop jenkins
    service jenkins stop

    # force symbolic link update
    ln -s -f /usr/lib/jenkins/jenkins-{version}.war /usr/share/jenkins/jenkins.war

    # start jenkins
    service jenkins start