Dealing with ports installations

[Mr Mailadmin]

try sysutils/pkg_cutleaves in the ports tree.

Tom Moyer wrote:

>I have a question.  I attempted to install a port and when it failed I
>realized that it installed its dependancies that I don't need.  ( I
>don't need the port because I found another that does what I need). 
>Is there any way to safely go through and see what is installed, what
>depends on it and deinstall those that I don't need/use?
>
>Thanks,
>Tom
>  
>