Problems uninstalling MacPorts

Question

I am new to mac and OSX, and I installed MacPorts, and a few minutes later I realized that I confused it for another program that I intended to install. Now I have no idea how to uninstall it. I have seen this guide but I don't have a Applications folder. I have looked in Libraries and others, but didn't find the installation folder. At last I ran the command du -h | grep '[Mm]ac[Pp]ort' and got the following output:

268K    ./Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.AppleLion.CoreReference.docset/Contents/Resources/Documents/featuredarticles/UsingMacPorts/Art
316K    ./Library/Developer/Shared/Documentation/DocSets/com.apple.adc.documentation.AppleLion.CoreReference.docset/Contents/Resources/Documents/featuredarticles/UsingMacPorts

Could it be that the installation didn't even finish? I remember having a shinny "V" and the word "Successful" when the installation ended.

I am running Mac OS X Version 10.7.5

Edit

I just checked that all the directories in that guide don't exists, but still I can run the program. This is my console:

$ port -v 
MacPorts 2.1.2
Entering interactive mode... ("help" for help, "quit" to quit)
[Users/username] > quit
Goodbye
$ 

Answer 1

You have the correct guide: http://guide.macports.org/chunked/installing.macports.uninstalling.html

The key command to run on that page:

% sudo rm -rf \
/opt/local \
/Applications/DarwinPorts \
/Applications/MacPorts \
/Library/LaunchDaemons/org.macports.* \
/Library/Receipts/DarwinPorts*.pkg \
/Library/Receipts/MacPorts*.pkg \
/Library/StartupItems/DarwinPortsStartup \
/Library/Tcl/darwinports1.0 \
/Library/Tcl/macports1.0 \
~/.macports

If /Applications/MacPorts doesn't exist (don't forget the leading slash; highly unlikely you don't have /Applications at all), and the other directories in that that sudo command line are gone, especially /opt/local, it's uninstalled.