View the most recent changes for the duff port at: duff.darwinports.com/diff
Scroll down toward the bottom of the page to get installation instructions for duff.
The raw portfile for duff 0.4 is located here:
http://duff.darwinports.com/dports/sysutils/duff/Portfile
Find related portfiles with the unique DarwinPorts.com search feature.
Check for any related Fink projects here: pdb.finkproject.org/pdb/package.php/duff

The duff Portfile 36451 2008-05-02 18:28:01Z ryandesign macports.org $

PortSystem 1.0

Name: duff
Version: 0.4
Category: sysutils
Platform: darwin
Maintainers: pmq

Description: Unix command-line utility for quickly finding duplicates in a given set of files
Long Description: ${description}

Homepage: http://duff.sourceforge.net
Master Sites: sourceforge
Checksums: md5 9767e471232c1b4ee553ae40dbe60464 sha1 2cb31f54da35469631756544197d33db3115f85c
use_bzip2 yes

configure.args --mandir ${prefix}/share/man

pre-destroot {
system "cd ${worksrcpath} && chmod a+x install-sh"
}

If you haven't already installed Darwin Ports, you can find easy instructions for doing so at the main Darwin Ports page.
Once Darwin Ports has been installed, in a terminal window and while online, type the following and hit return:

%  cd /opt/local/bin/portslocation/dports/duff
%  sudo port install duff  
Password: 

You will then be prompted for your root password, which you should enter. You may have to wait for a few minutes while the software is retrieved from the network and installed for you. Y ou should see something that looks similar to:

--->  Fetching duff
--->  Verifying checksum for duff
--->  Extracting duff
--->  Configuring duff
--->  Building duff with target all

--->  Staging duff into destroot

--->  Installing duff

- Make sure that you do not close the terminal window while Darwin Ports is working. Once the software has been installed, you can find further information about using duff with these commands:

%  man duff
%  apropos duff
%  which duff
%  locate duff

 Where to find more information: