How to run Terminal script by clicking desktop icon?

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http://askubuntu.com – I need to run " v4l2-ctl -i 2 " in Terminal, by clicking on a desktop icon. Right now, I have to manually open Terminal, type in this command, and it sets the video input of my tv card in Ubuntu. Then I can open the tv player to watch tv. For some reason, the tv card input doesn't stay set. It is a pain to have to open Terminal and run this command every time I want to watch tv. I want to just be able to click a desktop icon, and have it automatically open Terminal, and run this command, and then shut Terminal by itself. (the tv player already has an desktop icon) I've never done any kind of s (HowTos)