How to cleanup a MacPorts install?

[Ryan Schmidt]

On Apr 9, 2007, at 01:02, Bob Nielsen wrote:

>> I have many old and inactive, but installed Ports on my system. My
>> question is twofold:
>>
>> (1) How do I get rid of these old Ports fully to recover the disk
>> space they use?
>
> port -u uninstall
>
>> (2) How do I make sure that whenever I do an upgrade, the old  
>> versions
>> are really uninstalled?
>
> Run the above command after upgrading (possibly using a script).

Or simply

port -u upgrade foo

when upgrading a port. This will uninstall the old version just  
before installing the new one.