I\'m using a EC2 server instance. Used the following to install Jenkins:
wget -q -O - http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | sudo apt-key add
jenkins default administrator password is logged in log file in ubuntu
log file is situated in /var/log/jenkins/jenkins.log folder
password will be placed after this, Jenkins initial setup is required. An admin user has been created and a password generated. Please use the following password to proceed to installation: