first release

brightness.sh

@@ -0,0 +1,62 @@
+#! /bin/bash
+#    Path: ${HOME}/bin/brightness.sh
+#  Author: Alexander Brunhirl
+#    Date: 15.09.2015
+# Version: 0.1
+########################################
+
+[ $UID != 0 ] && echo -e "\033[1;31mERROR:\033[0m Need to be run as root!" >&2 && exit 1
+backlight="/sys/class/backlight/intel_backlight"
+[ ! -d "${backlight}" ] && echo -e "\033[1;31mERROR:\033[0m No such file or directory: ${backlight}">&2 && exit 1
+
+function main() {
+    actual=$(cat ${backlight}/actual_brightness)
+    if [ ${actual} == ${1} ]; then
+        echo "Already the expected brightness (${actual})"
+        exit 0
+    else
+        echo ${1} > ${backlight}/brightness
+        echo "Brightness set to $(cat ${backlight}/actual_brightness)"
+        exit 0
+    fi
+}
+
+function usage() {
+    echo -e "Usage: $(basename ${0}) <1..10>\n
+\033[1mDESCRIPTION:\033[0m
+This script set the monitor brightness. The values are between 1 for the lowest
+brightness and 10 for the highest.\n
+\033[1mEXIT STATUS:\033[0m
+ 0 if OK,
+ 1 if minor problems.\n"
+exit 0
+}
+
+[ -e ${1} ] && echo -e "\033[1;31mERROR:\033[0m Missing parameter\nRun \`$(basename ${0}) --help\` for more informations" >&2 && exit 1
+
+case ${1} in
+    -h|--help) usage
+    ;;
+    1) main 465
+    ;;
+    2) main 930
+    ;;
+    3) main 1395
+    ;;
+    4) main 1860
+    ;;
+    5) main 2325
+    ;;
+    6) main 2790
+    ;;
+    7) main 3255
+    ;;
+    8) main 3720
+    ;;
+    9) main 4185
+    ;;
+    10) main 4650
+    ;;
+    *) echo -e "\033[1;31mERROR:\033[0m Unknown brightness\nRun \`$(basename ${0}) --help\` for more informations" >&2 && exit 1
+    ;;
+esac