A Java and Maven noob here:
Using OSX 10.8
And Installed Maven with HomeBrew
1- If I say which mvn I will get this: /usr/local/bin/mvn
2- If I say echo $MAVEN_HOME I will get nothing back.
3- If I go to my Maven Installation on EClipse it will look like this:

4- If I go to Maven settings in IntelliJ, it will look like this: So far I have been able to run Maven goals with IntelliJ.

Ok That's all I have. Can you please take a look and see what are the inconsistencies I am having and what things to fix to set this correctly everywhere?