I think I may be doing something wrong, but I tried what you suggested. I control-clicked(i have a mac, no right clicks) on the desktop and it brought up the options: Help, New Folder, Get info, and Change Desktop Background. Then I control-clicked on the file i want to execute in the terminal via the desktop(test.sh) and it brought up the options: Help, Open, Open With, Get Info, Move To Trash, Make Alias, Duplicate, and Copy "Test.sh". I tried to change Open With to open with the terminal but it wouldnt let me. I think I'm doing something wrong.