How to install .run files?

Question

How can I install .run files?

When I open them with the software center, I always get the message that the file couldn't be opened.

Answer 1

.run files usually are scripts. You should not install - execute any file - script outside of Ubuntu repositories, except if you trust 100% the source. You can see the contents of the .run file with an editor.

gedit <filename>.run 

You can execute a .run file from terminal (CTRL+ALT+T). First give the appropriate permissions. You have to connect to folder where the file is. I assume is in Downloads folder

cd Downloads 
chmod +x <filename>.run 

Then execute it with

./<filename>.run  

or if needs root privileges (dangerous) , prefix with sudo