Update Jenkins

update_jenkins.sh

#!/bin/bash

if [ $# -lt 1 ] ; then
    printf "%s\n" "Usage: $0 version"
    exit 1
fi

VERSION=$1
JENKINS_FILE="jenkins.war_$VERSION.bak"

echo "Updating Jenkins to ${VERSION}"
cd /usr/lib/jenkins/

echo "Existing backup versions:"
ls

echo "Downloading new version to jenkins.war_${VERSION}.bak"
wget -O "$JENKINS_FILE" "http://updates.jenkins-ci.org/download/war/${VERSION}/jenkins.war"

echo "Existing versions:"
ls -lah

echo "Stopping Jenkins service"
service jenkins stop

echo "Replacing old jenkins.war with new one"
cp "$JENKINS_FILE" "jenkins.war"

echo "Starging Jenkins service"
service jenkins start

echo "All done."