Automatic best resolution with xrandr

If you like me you have a big screen with your laptop and wants to automate when your X session start to get the best resolution, you can use that script :

[code lang=“bash”]
#!/bin/bash

function get_resolutions() {
xrandr|while read -a line;do
RES="${line[1]}x${line[3]} "
[[ ${RES} != [0-9]* ]] && continue
echo ${RES}
done
}

_BEST_RES=0
BEST_RES=
for res in $(get_resolutions);do
_res=${res/x/}
[[ $_res -ge ${_BEST_RES} ]] && {
BEST_RES=${res}
_BEST_RES=${_res}
}
done
xrandr -s ${BEST_RES}
[/code]