Like so: ./fhpd (fhpd) load ../pkglibdir/funit-threads-looper [0.0] Loaded executable file: /home/rmoseley/frysk-git/build/frysk-core/frysk/bindir/../pkglibdir/funit-threads-looper (fhpd) focus Target set pid id path-to-executable [0.0] 0 0 /home/rmoseley/frysk-git/build/frysk-core/frysk/bindir/../pkglibdir/funit-threads-looper (fhpd) focus [1.0] Creating new HPD notation set. (fhpd) focus Target set pid id path-to-executable (fhpd) The user should be warned that they are trying to focus on a non-existent target set.