Problems in installing Symbolic Math Toolbox

I am trying to install the Symbolic Math Toolbox in Ubuntu-20. The folder /usr/local/MATLAB/R2024B has all permissions needed as you can see in Img-1.

But I get the msg as in Img-2. (Sorry not to include only the red text but I did not find any one.)

Any help welcome.

Happy new year.

[Walter Roberson]

You cd /usr/local/MATLAB/R2024b . From that directory you invoke matlab . There is no local file named matlab so you are either activating an alias or else you have a matlab executable somewhere on your search path. Either way, there is the possibility that the alias or executable is not to /usr/local/MATLAB/R2024b/bin/matlab

[Manolis]

Thanks @Walter Roberson but this is not the case.

The executables are indeed at /usr/local/MATLAB/R2024b. Please find the answer at the end of this question.

Manolis Logiadis

Answer 1

[Star Strider]

pngs = dir('*.png')

pngs = 2x1 struct array with fields:
    name
    folder
    date
    bytes
    isdir
    datenum

for k = 1:numel(pngs)
    figure
    imshow(imread(pngs(k).name))
end

●

First, if you haven't already, click on the link in the error window to find out what it says. (My installation is different from yours, since MATLAB wanted toinstall it to Home/ usr/local/MATLAB/R2024b, so I let it.)

See: Linux : Installing new toolboxes on an existing installation since that may apply to your situation.

.

[Manolis]

@Star Strider Thank you for your answer.

The solution to this problem is changing the owner of /usr/local/MATLAB/ from root to my name using:

cd /usr/local/MATLAB/

sudo chown -R manos *

For more details look at:

https://uk.mathworks.com/matlabcentral/answers/717063-linux-installing-new-toolboxes-on-an-existing-installation#answer_598360

Happy new year.

Manolis Logiadis

[Star Strider]

My pleasure!

That is the same link I directed you to in my answer.

You, too!

[Manolis]

Yes indeed @Star Strider: I mention the link once more for anybody who would read my comment.

Speaking about the Error message it is misleading: It is not question of rights only, it is question of rights AND owner.

Happy Matlab.