1#!/bin/sh 2#- 3# SPDX-License-Identifier: CC0-1.0 4# 5# Written in 2021 by Alfonso Sabato Siciliano. 6# 7# To the extent possible under law, the author has dedicated all copyright 8# and related and neighboring rights to this software to the public domain 9# worldwide. This software is distributed without any warranty, see: 10# <http://creativecommons.org/publicdomain/zero/1.0/>. 11 12: ${BSDDIALOG_ERROR=255} 13: ${BSDDIALOG_OK=0} 14: ${BSDDIALOG_ESC=5} 15 16./bsddialog --title " msgbox " --msgbox "Hello World!" 6 20 17 18case $? in 19 $BSDDIALOG_ERROR ) 20 exit 1 21 ;; 22 $BSDDIALOG_ESC ) 23 echo "[ESC]" 24 ;; 25 $BSDDIALOG_OK ) 26 echo "[OK]" 27 ;; 28esac 29