Simple Gradle build listener to print a "Finished at: " similarly to Maven after the build has finished. Put this file into the ~/.gradle/init.d directory.

BuildTimestamp.gradle

import org.gradle.BuildAdapter
import java.text.SimpleDateFormat

class FinishedAtBuildListener extends BuildAdapter {
	private SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS")
	
	void buildFinished(BuildResult result) {
		println "Finished at: "+formatter.format(new Date())
	}
}

gradle.addListener(new FinishedAtBuildListener())