Maven: Overview for the values of Maven properties

As a workaround, add this to the <plugins> ... </plugins> section inside your project’s pom.xml:

<plugin>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-antrun-plugin</artifactId>
  <version>1.7</version>
  <executions>
    <execution>
      <phase>validate</phase>
      <goals>
        <goal>run</goal>
      </goals>
      <configuration>
        <tasks>
          <echoproperties />
        </tasks>
      </configuration>
    </execution>
  </executions>
</plugin>

Now execute mvn validate.
On the console, prefixed with [echoproperties], there will be the full list of system properties, including those set by Maven such as project.build.outputDirectory, basedir, and settings.localRepository.

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