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Adjust laptop brightness/backlight via terminal.

I have been trying to search for a way to adjust the brightness/backlight on my laptop's screen in the terminal. So far I have come across a wide variety of suggested possibilities, but is there a standard way to do it?

I am hoping for a similar solution like you can do with your volume: amixer -q sset 'Master' 50%

I'm running Fedora 22 with GNOME.

Adjust laptop brightness/backlight via terminal.

I have been trying to search for a way to adjust the brightness/backlight on my laptop's screen in the terminal. So far I have come across a wide variety of suggested possibilities, but is there a standard way to do it?

I am hoping for a similar solution like you can do with your volume: amixer -q sset 'Master' 50%

I'm running Fedora 22 with GNOME.