3.1 Cannot Start MATLAB 4.1.1 on Convex

Problem

When attempting to invoke MATLAB version 4.1.1 on the Convex Platform (arch c2mp) the following error message is displayed:

/matlab: Permission denied
even though the $MATLAB/bin/matlab has execute permission.

Solution

The MATLAB script requires the Korn Shell (usually in /bin/ksh).

Case 1:  Korn Shell is not available



     If the Korn Shell is not available then modify the

     following files after installation:
 


          1. Replace line 1 in $MATLAB/bin/matlab with



                 #!/bin/sh



          2. In $MATLAB/bin/.matlabrc.sh, comment out line 315 by 

             placing a '#' sign in front of it.  The new line 

             should read:



                      #ulimit -s unlimited



     If you experience stacksize overflow problems when using

     MATLAB, then do the following:



          1. (csh/tsh) Execute the following commands at the UNIX 

             prompt:



                      limit stacksize unlimited

                      matlab



          2. (sh) Create your own script to invoke MATLAB.  For 

             example:



                      #!/bin/csh

                      #

                      limit stacksize unlimited

                      matlab



Case 2:  Korn Shell is available, but not in /bin/ksh



     If the Korn Shell is available, but not in /bin/ksh,

     then modify the following file after installation:



          1. Replace line 1 in $MATLAB/bin/matlab with



                 #!path_to_ksh



                 where path_to_ksh is the absolute path to the

                 ksh executable.



The Korn Shell is available from Convex as a part of the following
layered product:
CTB-001 Convex Toolbox

It includes other utilities such as SCCS, nawk, etc. If you are interested in the Toolbox, please contact your Convex sales representative.

(c) Copyright 1994 by The MathWorks, Inc.