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Wrapper to change brightness of laptop's display in linux using xrandr.
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| #!/bin/bash | |
| if [ "$1" == "-h" ] || [ -z "$1" ] | |
| then | |
| echo " Set the brightness of the primary display i.e. laptop's one. | |
| Usage: $(basename "$0") [-h] [-b brightness_value] | |
| where: | |
| -h show this help text | |
| -b set the brightness in range [0,1]" | |
| exit 0 | |
| fi | |
| while getopts b: flag | |
| do | |
| case "${flag}" in | |
| b) brightness_val=${OPTARG};; | |
| esac | |
| done | |
| # detect the primary display i.e. laptop's one and change the brightness | |
| xrandr --output $(xrandr -q | grep ' connected' | head -n 1 | cut -d ' ' -f1) --brightness $brightness_val | |
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