[SOLVED] Installed MATLAB in /home/c/Desktop/MATLAB But Cannot ACCESS it
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The installation process at some point asks you if you want to create symbolic links to the matlab executable in /usr/local/bin. Maybe you didn't notice that, but you can always create them later as root:
ln -s /home/c/Desktop/MATLAB/bin/matlab .
ln -s /home/c/Desktop/MATLAB/bin/mex .
Instead of creating a symbolic link you can create a launcher on your Desktop that points to the executable. Just right click your desktop and click "Create Launcher". I'm not sure if that functionality is still there depending on what version of Ubuntu you're running. I'm still using Gnome 2 in Debian. You could make a symbolic link and it should work just fine, but by making a "Launcher" you could set your own icon and everything, :-)
Creating the symbolic links in /usr/local/bin just makes matlab available to all the users that have /usr/local/bin on their PATH (all the users by default). However it has nothing to do with desktop/panel shortcuts. You have to create them as dudeman41465 suggested. In the newly created launcher set the Executable/Application to setsid and the command line arguments to /usr/local/bin/matlab -desktop. This is the method suggested by Mathworks support.
Regarding mex it is an utility that allows you to interface C/C++ or Fortran routines to Matlab. You can think at it as a compiler where the final executable is a matlab command (mex file). You can run the mex compiler outside matlab (using the mex command you've linked in /usr/local/bin) or from the matlab command line.