#!/bin/bash

function g_yesno {
 if [ -z $DISPLAY ]
 then
  read -p "$@ y/n" -n 1 -r g_yesno
  echo
  [[ ! $g_yesno =~ ^[Yy]$ ]] && g_echo_error_exit "Exited because answer was no!"
 else
  zenity --question --text="$@" --default-cancel --no-wrap || g_echo_error_exit "Exited because answer was no!"
 fi
}