I was trying to install netatalk-2.0.3 so I could use AFP on my Ubuntu box with Mac OS X Tiger. Unfortunately, I was getting this error message.

The steps for getting netatalk:

mkdir -p ~/src/netatalk
cd ~/src/netatalk
sudo aptitude install devscripts cracklib2-dev dpkg-dev libssl-dev
apt-get source netatalk
sudo apt-get build-dep netatalk
cd netatalk-2.0.3
DEB_BUILD_OPTIONS=ssl sudo dpkg-buildpackage -us -uc
sudo debi

What wasn’t working:

:~/src/netatalk$ apt-get source netatalk
Reading package lists… Done
Building dependency tree… Done
E: Unable to find a source package for netatalk

The fix:

sudo vi /etc/apt/sources.list

Uncomment the two lines relating to the universe repository.

Run:

sudo apt-get update

Now you can continue with the steps and the above error should be fixed.