Maven Archetype Plugin

mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

mvn archetype:create-from-project

http://johnjianfang.blogspot.com/2009/05/create-maven-archetype-from-existing.html