13 lines
260 B
Nix
13 lines
260 B
Nix
with import <nixpkgs> {};
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pkgs.writeShellScriptBin "bright" ''
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#!/bin/sh
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f="/sys/class/backlight/*/brightness"
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if [ "$1" = up ] ; then
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echo $(($(cat $f) + 50)) | sudo tee $f
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fi
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if [ "$1" = down ] ; then
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echo $(($(cat $f) - 50)) | sudo tee $f
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fi
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''
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