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#!/bin/sh
# Print brightness percent to wob's fifo to flash a brightness bar.
# Usage: brightness-osd.sh up|down
set -eu
fifo=${XDG_RUNTIME_DIR:-/tmp}/wob.sock
case "${1:-}" in
up) brightnessctl set +5% >/dev/null ;;
down) brightnessctl set 5%- >/dev/null ;;
*) echo "usage: $0 up|down" >&2; exit 2 ;;
esac
cur=$(brightnessctl g)
max=$(brightnessctl m)
printf '%d\n' "$(( cur * 100 / max ))" >"$fifo"
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