  A program to generate codes in Fortran and C of the full Magnetohydrodynamic
equations is shown. The program used the free computer algebra system software
REDUCE. This software has a package called EXCALC, which is an exterior
calculus program. The advantage of this program is that it can be modified to
include another complex metric or spacetime. The output of this program is
modified by means of a LINUX script which creates a new REDUCE program to
manipulate the MHD equations to obtain a code that can be used as a seed for a
MHD code for numerical applications. As an example, we present part of output
of our programs for Cartesian coordinates and how to do the discretization.
