Add a "print<PropertyName>" rule to Gradle projects to easily print project property values

gistfile1.groovy

/**
 * Put in an init script, e.g.: $HOME/.gradle/init.d/printProperties.gradle
 * Then call from a gradle project, e.g.: gradle printVersion
 */
allprojects { Project project ->
  tasks.addRule( "print<PropertyName> - print the value of a property in this and any subprojects" ) { String taskName ->
    if ( taskName.startsWith( "print" ) ) {
      def propName = (taskName - 'print')
      propName = propName[0].toLowerCase() + propName[1..-1]
      task( taskName ) << { println "${propName}: ${project.properties[propName]}" }
    }
  }
}