How to change color brightness from unix terminal......

[scypher]

accidentally I raised my brightness to 100% so I couldn't see anything...
My battery died before I could fix it with tab or something else....
now I can't fix it....
because I can't see anything..
Is there a way to adjust color brightness through my unix terminal.....?

[GNU-Fan]

I can set the brightness on my Laptop with the CLI.
For that I search in /proc/acpi/video...
until I find a file called "brightness".

Then I do

cat brightness

and it prints the values it accepts.

10 20 30 40 ... 90 100

Finally, I echo the brightness level I wish to that file.

echo "20" > brightness

[jayd512]

Hello and Welcome!

Another suggestion would be to use keyboard shortcuts... manage to find your way to the preferences pane.

Open a Terminal, hit 'Alt+e'... then 'o'
This should open your profile preferences pane. You'll want to go to the 'Background' tab and set it accordingly.

[scypher]

Remember guys I'm talking color brightness and I accidentally changed it from my catalyst control center.....
I don't think if I change the system's color brightness to 0% my overalll color brightness =%50 cause %100 + %0/2 but I'm not about to risk anything...
I managed to open it but didn't know how to reach the color part.....

[GNU-Fan]

Maybe the aticonfig tool is of help. The Display attribute sections looks promising.

[Segfault]

Do not use ATI myself, but generally all settings in Linux are stored in some config file. User-level config files are stored in home directory. How about efiting that file? If this fails, removing ATI conf file will certainly reset it to defaults.