Screen going blank

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http://crunchbanglinux.org – It drives me up the wall when the screen keeps going blank after every 10 mins or so, lol. So i right-clicked on the Desktop and went to Settings => Screensaver and in the box opposite 'Blank After' i set the amount to 300 minutes. I hope this is the correct? But what i would like to know is, is there a way i could stop the screen from blanking at the terminal please? (HowTos)