在bash中写入echo ^G。要创建^G，按ctrl+v，然后按ctrl+ G。

Tput bel工作在大多数贝壳。

在OS X中，如果命令在终端不在前台时执行，这个(以及任何其他让铃声响起的命令)也会给你一个徽章:

确实，下面这段很有效果，也很有旋律:

say -v Bells "dong dong dong"

[更新]不幸的是bell不再包含在最新的OS x中。

say -v Victoria Do your homework!

使用以下方法探索声音:

say -v \?

macOS中没有“硬件哔哔声”。

The functionality you're thinking of is an artifact of very old (pre-1990s) IBM PC-compatible hardware. Before most computers had sound cards, most machines had a small speaker or piezo buzzer connected to one of the channels of a timer chip. This could be used to generate simple tones or beeps. Even after many computers integrated sound cards, it remained common for quite some time for computers to route this output to a separate internal speaker. More recently, many computers, especially laptops, have integrated this functionality into the onboard sound card.

(如果你对PC扬声器接口工作原理的技术细节感到好奇，这里有更多细节。)

这种硬件在苹果电脑中从未存在过。唯一可用的音频输出是通过声卡，macOS中唯一的系统哔哔声是用户的警报声。

在MacOS X上，必须激活“声音警告”选项(终端/首选项)才能发出声音。

终端类型:

echo -e "\a"

e参数告诉echo处理转义字符。由于\n是新的行字符，\a是钟形字符(与Ctrl+G相同)。