關閉:
sudo sh -c 'echo 1 > /sys/class/backlight/rpi_backlight/bl_power'
開啟:
sudo sh -c 'echo 0 > /sys/class/backlight/rpi_backlight/bl_power'
切換:
if [ "$(cat /sys/class/backlight/rpi_backlight/bl_power)" -eq "0" ]; then \
sudo sh -c "echo 1 > /sys/class/backlight/rpi_backlight/bl_power"; \
else \
sudo sh -c "echo 0 > /sys/class/backlight/rpi_backlight/bl_power"; fi
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