brightnessctl - read and control device brightness

       Maintained by Mykyta Holubakha, who is assisted by other open source contributors. For  more  information
       about brightnessctl development, visit:

       https://github.com/Hummer12007/brightnessctl

brightnessctl                                     24th Jan 2018                                 BRIGHTNESSCTL(1)

       brightnessctl - read and control device brightness

i,info
           Get device info.

       g,get
           Get the current brightness of the device.

       m,max
           Get the maximum brightness of the device.

       s,setVALUE
           Set the brightness of the device.

   VALUES
       You  may  specify  VALUE for the set command in absolute or relative form, and as a value or a delta from
       the current value. For example:

       brightnessctlset500
           Sets brightness to 500.

       brightnessctlset50%
           Sets brightness to 50% of the maximum.

       brightnessctlset50-
           Subtracts 50 from the current brightness.

       brightnessctlset+10
           Adds 10 to the current brightness.

       brightnessctlset50%-
           Subtracts 50% of the maximum from the current brightness.

       brightnessctlset+10%
           Adds 10% of the maximum to the current brightness.

-h,--help
           Print this help.

       -l,--list
           List devices with available brightness controls.

       -q,--quiet
           Suppress output.

       -p,--pretend
           Do not perform write operations.

       -m,--machine-readable
           Produce machine-readable output.

       -n,--min-value=VALUE
           Set minimum brightness when using delta values, defaults to 1.

       -e,--exponent=K
           Changes percentage scaling curve to exponential (linear by default). Default exponent is 4.

           Percentage equation: % = [VALUE]^[K] * [MAX] * 100^-[K].

           The exponential curve may make the adjustments perceptually equal.

       -s,--save
           Save state in a temporary file.

       -r,--restore
           Restore previously-saved state.

       -d,--device=DEVICE
           Specify device name (can be a wildcard).

       -c,--class=CLASS
           Specify device class.

       -v,--version
           Print version and exit.

brightnessctl [options] [operation] [value...]