To generate an Eclipse project using the Maven project metadata, run this:
mvn eclipse:clean eclipse:eclipse -DdownloadSources=true $*
To see the help (configuration parameters, etc.) for a given plugin, use this command:
mvn help:describe \
-DgroupId=<group ID> \
-DartifactId=<artifact ID> \
-Dversion=<version> \
-Dfull=true
For example, for Jetty:
mvn help:describe \
-DgroupId=org.mortbay.jetty \
-DartifactId=maven-jetty-plugin \
-Dversion=6.1.16 \
-Dfull=true