How do I ring a bell?

Peter Boosten peter at
Mon Oct 7 12:33:36 UTC 2013

On 7 okt. 2013, at 13:37, Frank Leonhardt <frank2 at> wrote:

> In the good'ol days I could make UNIX ring a bell (literally) by sending \a to the console TTY (an ASR33 in my case). Now there's an electronic synthesised ting or beep from an terminal emulator IF it's got a sound card and so on, and an IBM-PC had a beep routine in the BIOS.
> Is there any way to make a noise through the built in "bell" speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that.
> I could easily knock up a bit of hardware to go on a serial port (or similar) that could be triggered to make a noise, but these things have already got the hardware built in and I'm looking to use what I've already got.
> Thanks, Frank.
> P.S. "cdcontrol -f /dev/mycdrom eject" is the best I've come up with so far for getting attention.
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echo "CTRL-V CTRL-G" should do the trick 

Peter Boosten

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