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429 B

#!/usr/bin/env sh
MAX=10
MIN=2
setdelta() {
sxmo_setpinebacklight $(
cat /sys/class/backlight/backlight/brightness |
xargs -IB echo B $1 |
bc |
xargs -INUM echo -e "$MIN\nNUM" | sort -n | tail -n1 |
xargs -INUM echo -e "$MAX\nNUM" | sort -n | head -n1
)
sxmo_notify.sh 200 "Backlight $(cat /sys/class/backlight/backlight/brightness)/10"
}
up() {
setdelta "+1"
}
down() {
setdelta "-1"
}
$1 $2