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#!/bin/bashCURRENT=$(grep "current:" /proc/acpi/video/VGA/LCD/brightness |awk '{print $2}')case "$CURRENT" in100)echo -n 100 > /proc/acpi/video/VGA/LCD/brightness;;; 87)echo -n 100 > /proc/acpi/video/VGA/LCD/brightness;;;75)echo -n 87 > /proc/acpi/video/VGA/LCD/brightness;;; 62)echo -n 75 > /proc/acpi/video/VGA/LCD/brightness;;; 50)echo -n 62 > /proc/acpi/video/VGA/LCD/brightness;;; 37)echo -n 50 > /proc/acpi/video/VGA/LCD/brightness;;; 25)echo -n 37 > /proc/acpi/video/VGA/LCD/brightness;;; 12)echo -n 25 > /proc/acpi/video/VGA/LCD/brightness;;; *)echo -n 100 > /proc/acpi/video/VGA/LCD/brightness ;;;esac