I have just installed altera modelsim starter edition on my ubuntu 12.04.1 64-bit laptop. I downloaded the installer, run it with the root user. I selected an installation folder (not the default one). Checked the option to download installation files. After download completed, installation continued without errors. I rebooted the machine and CD to the **/bin/ folder to launch ./vsim but i could not. I receive this error -> bash: ./vsim: Permission denied Any help ? Thanks in advance.