jenkins on debian 8 jessie

[Nicholas Geovanis]

Hi - New jenkins user trying to start jenkins on Debian 8 jessie. I receive the following messages at failed startup, was wondering if someone could point me in the right direction: (many thanks)
nick@nickdell:~/src$ java -jar /usr/share/jenkins/jenkins.war
Running from: /usr/share/jenkins/jenkins.war
webroot: $user.home/.jenkins
Mar 05, 2016 8:42:05 PM winstone.Logger logInternal
INFO: Beginning extraction from war file
Mar 05, 2016 8:42:05 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: jetty-winstone-2.9
Mar 05, 2016 8:42:05 PM org.eclipse.jetty.util.log.JavaUtilLog warn
WARNING: Can't reuse /tmp/jetty-0.0.0.0-8080-war--any-, using /tmp/jetty-0.0.0.0-8080-war--any-_7587508702438688318
Mar 05, 2016 8:42:07 PM org.eclipse.jetty.util.log.JavaUtilLog info
INFO: NO JSP Support for , did not find org.apache.jasper.servlet.JspServlet
Jenkins home directory: /home/nick/.jenkins found at: $user.home/.jenkins
Mar 05, 2016 8:42:08 PM org.eclipse.jetty.util.log.JavaUtilLog warn
WARNING: FAILED SelectChann...@0.0.0.0:8080: java.net.BindException: Address already in use
java.net.BindException: Address already in use
    at sun.nio.ch.Net.bind0(Native Method)
    at sun.nio.ch.Net.bind(Net.java:463)
    at sun.nio.ch.Net.bind(Net.java:455)

[Vivekanand S V]

Looks like something else is already running in port 8080. You need to stop that before starting this.

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[Nicholas Geovanis]

Indeed. It turned out that previous invocations of jenkins were running, reparented to PID 1. Killed them and jenkins started-up fine.
Thanks....Nick Geo