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brightnessctl 0.1.1 - read and control device brightness.
Usage: brightnessctl [options] [operation] [value]
Options:
-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.
-s, --save save previous state in a temporary file.
-r, --restore restore previous saved state.
-h, --help print this help.
-d, --device=DEVICE specify device name.
-c, --class=CLASS specify device class.
Operations:
g, get get current brightness of the device.
m, max get maximum brightness of the device.
s, set VALUE set brightness of the device.
Valid values:
specific value Example: 500
percentage value Example: 50%
specific delta Example: 50- or +10
percentage delta Example: 50%- or +10%
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