gistfile1.txt

#!/bin/bash

pid=$(pgrep -t tty$(fgconsole) xinit)
pid=$(pgrep -P $pid -n)

import_environment() {
        (( pid )) && for var; do
                IFS='=' read key val < <(egrep -z "$var" /proc/$pid/environ)

                printf -v "$key" %s "$val"
                [[ ${!key} ]] && export "$key"
        done
}

import_environment XAUTHORITY USER DISPLAY