This is a known issue that happens if you're currently inside the extracted installation folder (or the mounted DVD directory) when you try to run the installer. The installer needs to create some temporary files in the current working directory, and since the DVD directory (or some extracted folders) aren’t writable, it throws this error.
You need to cd to your home directory and give the command shown in the error message.
You can refer the below links for more details:
- https://www.mathworks.com/matlabcentral/answers/308180-matlab-r2016b-ubuntu-16-06-installation-error?s_tid=answers_rc1-2_p2_MLT
- https://www.mathworks.com/help/install/install-products.html
I hope this helps!
