ORIGINAL_JENKINS_SERVER=
ORIGINAL_SERVER_USER=

NEW_JENKINS_SERVER=
NEW_SERVER_USER=

# ON THE ORIGINAL JENKINS SERVER
ssh $ORIGINAL_SERVER_USER@$ORIGINAL_JENKINS_SERVER
cd /var/lib/jenkins/
for i in `ls jobs`; do echo "jobs/$i/config.xml";done > config.totar
tar zcf /tmp/jenkins_config.tar.gz *.xml userContent/ plugins/ -T config.totar
exit

# ON YOUR WORKSTATION
scp $ORIGINAL_SERVER_USER@$ORIGINAL_JENKINS_SERVER:/tmp/jenkins_config.tar.gz .
scp jenkins_config.tar.gz $NEW_SERVER_USER@$NEW_JENKINS_SERVER:/tmp/

# ON THE NEW JENKINS SERVER
ssh $NEW_SERVER_USER@$NEW_JENKINS_SERVER
cd /var/lib/jenkins
sudo tar xvzf /tmp/jenkins_config.tar.gz
sudo chown -R jenkins:jenkins .
sudo vi config.xml
# Remove all the slaves
sudo service jenkins restart
exit