#!/bin/sh
LIST=`xrandr | sed '/ connected/!d;s/ .*$//'`
MONITORS=`printf '%s' "${LIST}" | tr '\n' ' '`

CMD="$(FIRST=1 ; for i in ${MONITORS} ; do
    CURR=`printf '%s' "${LIST}" | sed "/${LAST:=empty}/d" | menu "Next monitor (to right):"`
    [ -z "${CURR}" ] && exit 0
    [ "${FIRST}" ] && printf 'xrandr --output %s' "${CURR}" && FIRST=
    [ "${LAST}"  ] && printf ' --left-of %s' "${CURR}"
    LAST="${CURR}"
done)"

$($CMD)