/usr/share/kde4/config/step.knsrc is in step 4:4.13.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | [KNewStuff3]
ProvidersUrl=http://edu.kde.org/step/downloads/providers.xml
TargetDir=step/examples
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