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-rwxr-xr-xbin/backlight13
1 files changed, 9 insertions, 4 deletions
diff --git a/bin/backlight b/bin/backlight
index ac8a466..be0dadf 100755
--- a/bin/backlight
+++ b/bin/backlight
@@ -1,5 +1,9 @@
#!/usr/bin/env bash
-# set backlight through sysfs
+#
+# Sets backlight through /sys/class/backlight/intel_backlight/brightness
+# Note: This requires the file to be user-writable!
+# Changes can be applied either by (positive or negative) relative increment
+# [-i] or as an absolute value [-s] (in percentage).
set -euo pipefail
@@ -70,8 +74,8 @@ set_brightness() {
}
print_help() {
- echo -e "Usage:\n $0 -d <decrement_by_x_percent> \n or $0 -i <increment_by_x_percent>"
- exit 1
+ echo -e "Usage: $0 [-i <increment_in_percent>] [-s <brightness_in_percent>]"
+ exit 0
}
if [ ${#@} -gt 0 ]; then
@@ -93,7 +97,8 @@ if [ ${#@} -gt 0 ]; then
esac
done
else
- print_help
+ echo "$current_brightness_percentage"
+ exit 0
fi
set_brightness