I'm aware of this article: https://help.ubuntu.com/community/MATLAB and have followed the instructions, which didn't help me. EDIT: Only because I'm stupid, the article is great.

I mounted my matlab 2014b-iso (it's named "R2014b_glnxa64.iso", so I'm very much assuming it's the 64-bit version) and ls -l is telling me

total 6334

-r--r--r-- 1 root root    3371 Mär 21  2011 activate.ini

dr-xr-xr-x 7 root root    2048 Sep 16 17:18 archives

dr-xr-xr-x 3 root root    2048 Sep 16 17:15 bin

dr-xr-xr-x 3 root root    2048 Sep 16 17:15 etc

dr-xr-xr-x 5 root root    2048 Sep 16 17:16 help

-r-xr-xr-x 1 root root   10518 Aug  5 02:11 install

-r--r--r-- 1 root root    9365 Jul 26 09:07 installer_input.txt

-r--r--r-- 1 root root 6340999 Sep 12 16:15 install_guide.pdf

dr-xr-xr-x 4 root root    2048 Sep 16 17:15 java

-r--r--r-- 1 root root   82776 Sep 12 15:23 license.txt

-r--r--r-- 1 root root    8300 Sep  8 23:00 patents.txt

-r--r--r-- 1 root root   15779 Sep  8 23:12 readme.txt

dr-xr-xr-x 3 root root    2048 Sep 16 17:15 sys

-r--r--r-- 1 root root     245 Dez 28  2013 trademarks.txt

-r--r--r-- 1 root root      32 Sep 16 17:31 version.txt

so I should have all permissions I need.

However, executing sudo ./install results in

./install: 1: eval: /media/iso/bin/glnx86/install_unix: not found

which is right, since the path is /media/iso/bin/glnxa64/install_unix.

Out of curiosity I tried sudo ./bin/glnxa64/install_unix and got

Error: Cannot locate Java Runtime Environment (JRE).

The directory /media/iso/sys/java/jre/glnx86/jre does not exist.

How can I install matlab!?