script-linux/monitor-display

#!/bin/bash

mode=$(echo -e "same\ndifferent" | dmenu -p "monitors layout:")
#monitors=$(xrandr --listmonitors | sort -r | cut -d' ' -f6)
monitors=$(xrandr -q | grep "^[^ ]" | cut -d' ' -f1 | grep -v Screen)

main=$(echo $monitors | tr ' ' '\n' | dmenu -p "which monitor is main:")
monitors=$(echo $monitors | sed "s/$main//")

if [[ $mode == "same" ]]; then
    for m in $monitors; do
        xrandr --output $m --auto --same-as $main --mode 1920x1080
    done
elif [[ $mode == "different" ]]; then
    for m in $monitors; do
        direction=$(echo -e "left\nright\nabove\nbelow\nsame\nnone" | dmenu -p "monitor '$m' direction from '$main'")

        case $direction in
            "left" | "right")
                direction="--$direction-of"
                ;;
            "above" | "below")
                direction="--$direction"
                ;;
            "same")
                direction="--$direction-as"
                ;;
            "none")
                continue
                ;;
        esac

        xrandr --output $main --primary --mode 1920x1080 --output $m --mode 1920x1080 $direction $main
    done
fi