NAME

       brightnessctl - read and control device brightness

SYNOPSIS

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

OPTIONS

       -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.

OPERATIONS

       i, info
           Get device info.

       g, get
           Get the current brightness of the device.

       m, max
           Get the maximum brightness of the device.

       s, set VALUE
           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:

       brightnessctl set 500
           Sets brightness to 500.

       brightnessctl set 50%
           Sets brightness to 50% of the maximum.

       brightnessctl set 50-
           Subtracts 50 from the current brightness.

       brightnessctl set +10
           Adds 10 to the current brightness.

       brightnessctl set 50%-
           Subtracts 50% of the maximum from the current brightness.

       brightnessctl set +10%
           Adds 10% of the maximum to the current brightness.

AUTHORS

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

       https://github.com/Hummer12007/brightnessctl