Moving Jenkins server configuration from one server to another

jenkins_copying_configuration.sh

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

Line 10 does not work for directories containing changes, better will be:
find jobs -name config.xml > config.totar

the previous comment should be 'directories containing spaces'

This script does not copy hidden folders.

Try to replace..

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

by...

tar zcf /tmp/jenkins_config.tar.gz *.xml userContent/ plugins/ jobs/*/config.xml

Is it not necessary to copy the users/ directory?

You're missing some files

$JENKINS_HOME/*.xml
$JENKINS_HOME/jobs/*/*.xml
$JENKINS_HOME/nodes/*
$JENKINS_HOME/plugins/*.jpi
$JENKINS_HOME/secrets/*
$JENKINS_HOME/users/*