title: how to open up .sh extension in ubuntu
body: <p>I am a window user,and never tried Linux before. Because of project, I installed the Ubuntu and I downloaded one file in .sh extension. That file is the python from Enthough Distribution. I tried to double clicked the .sh file and there is error. I really have no idea how Linux works. I searched in Google but they showed some command lines that I don't understand. So I hope somebody can provide some detailed guide. Sorry I am a total Linux newbie.</p>
  
  <p>Here is a picture of the error:
  <img src="https://i.stack.imgur.com/uS5Ze.png" alt="enter image description here"></p>