octave2.9 2.9.9-6 (amd64 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.
 .
 Octave uses some of the best and most respected numerical libraries as
 balgen, dassl, eispack, fftpack, lapack, linpack, minpack, odepack,
 ranlib, slatec-fn and villad. Octave can be dynamically extended with
 user-supplied C++ files.
 .
  Homepage: http://www.octave.org/