brightness controller

my 2008 imac with linux mint boots up hella bright. I want to be able to dim it all the way down to black in finite increments which by default isn't an option. this is one solution I found

BE VERY CAREFULL WITH THIS!!!

one simple mistake and your screen is black

I had to ssh in and delete brightness-controller. you think id learn. I made the same mistake twice when I did it again with xcalib which is horrible.

xcalib -co 95 -a darkens the screen in managable increments. but it doesnt let you undo it!!!! i tried negative values, decimal values nothing worked. I had it on 50 and i ran the command again BOOM it was black and i couldnt see shit. i was trapped in the dark with no way out

i should've done all my messing around in the guest profile so i could log out.