ybacklight

Manage screen backlight brightness. See also xbacklight.

=> More information.

• Print current brightness and maximal brightness, shortened and separated by a slash:

ybacklight Sc/Sm

• Set the brightness to 420:

ybacklight s{420}

• Increase the brightness by 42 big steps (4200 by default):

ybacklight Si{42}

• Decrease the brightness by 300:

ybacklight d{300}

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