Hibernate Reverse Engineer Database -

I am using MyEclipse to generate the hibernate code for a PostgreSQL database. The point is that this is the only reason I am using myclipus. I want to use some type of command line tool to generate this code easily. I have seen some mention of such tools but I can not find anything concrete It seems like what I want to do is very simple I hate to fire this IDE and to do all these simple things I want to go through

What's the best way to do this?

Yes, you can use it as a command line from AT.