octave 1:2.9.12-2ubuntu1 (i386 binary) in ubuntu gutsy

 Octave is a (mostly Matlab (R) compatible) high-level language, primarily
 intended for numerical computations. It provides a convenient command-line
 interface for solving linear and nonlinear problems numerically.
 .
 This package is an empty 'virtual' package whose sole purpose is to
 install the current Octave version from the 2.9 branch (the recommended
 testing branch) .
 .
 Once you have the octave2.9 package installed, you can remove this package.