jenkins the definitive guide

</build>

</project>

This will produce a MANIFEST.MF file along the following lines:

Manifest-Version: 1.0

Archiver-Version: Plexus Archiver

Created-By: Apache Maven

Built-By: johnsmart

Build-Jdk: 1.6.0_22

Jenkins-Build-Number: 63

Jenkins-Project: game-of-life

Jenkins-Version: 1.382

Implementation-Version: jenkins-game-of-life-63

Specification-Title: gameoflife-web

Specification-Version: 0.0.55-SNAPSHOT

And in a Groovy script, they can be obtained via the System.getenv() method:

def env = System.getenv()

env.each {

println it

}

or:

def env = System.getenv()

println env['BUILD_NUMBER']

5.6.5. Running Groovy Scripts

Groovy is not only a popular JVM dynamic language, it is also a convenient language for low-level
scripting. The Jenkins Groovy Plugin^10 lets you run arbitrary Groovy commands, or invoke Groovy
scripts, as part of your build process.

Once you have installed the Groovy plugin in the usual way, you need to add a reference to your
Groovy installation in the system configuration page (see Figure 5.29, “Adding a Groovy installation
to Jenkins”).

Figure 5.29. Adding a Groovy installation to Jenkins

(^10) http://wiki.jenkins-ci.org//display/HUDSON/Groovy+Plugin