Created
February 9, 2013 00:49
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Shell script for screen brightness setting of ASUS UX32 series under ubuntu 12.10
You can pass a step value as parameter, and should pass negative values to decrease brightness.
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| #!/bin/sh | |
| # get user step on command line or default to 1 | |
| USERSTEP=${1:-1} | |
| # get max and current values of brightness | |
| MAX=`/usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-max-brightness` | |
| CUR=`/usr/lib/gnome-settings-daemon/gsd-backlight-helper --get-brightness` | |
| # define step and min to apply regarding the max value to have approximatively ten levels of settings | |
| STEP=$(($MAX/10)) | |
| MIN=$((STEP/2)) | |
| # calc new user wanted value | |
| NEW=$(($CUR+$USERSTEP*$STEP)) | |
| if [ $NEW -gt $MAX ]; then | |
| NEW=$MAX | |
| fi | |
| if [ $NEW -lt $MIN ]; then | |
| NEW=$MIN | |
| fi | |
| # finally apply new setting and echo it | |
| pkexec /usr/lib/gnome-settings-daemon/gsd-backlight-helper --set-brightness $NEW | |
| echo $NEW |
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