The inbuilt script console is a very useful and powerful Jenkins extension and ideally suits certain types of tasks. This simple but powerful built-in web console allows you to run Groovy scripts on your Jenkins instance (or its slave nodes) from directly within the user interface, and is installed as standard.
To access the console, either navigate to Manage Jenkins and then select Script Console, or simply append /script
to your Jenkins host and port, like this for example:
http://jenkinshost:8080/script
You should then be presented with a page similar to the following. This contains some introductory information and a link to the website http://www.groovy-lang.org/ for further details on Groovy, the language that the script console uses.
This provided link is from the Jenkins home page:
https://wiki.jenkins-ci.org/display/JENKINS/Jenkins+Script+Console
It provides a useful collection of example scripts to show you how this works in order to get you...