How to start a system “beep”, from the built-in pc speaker, using a batch file?

Question

I have written a batch script in an interactive mode, for making some tasks.

Sometimes, These tasks takes a long time to be finished, and then the batch asks if the

Answer 1

The following can be used to issue a beep

• without pausing the script
• without creating a new line.
• without requiring the use of a non-printable character

 Echo/| CHOICE /N 2> nul & rem BEL

It is a deliberate misuse of the choice command, that Echo's nothing via a pipe to Choice, causing a non-breaking error. STDERR is redirected to nul, and the default choice prompt is suppressed via the /N switch, meaning no new line is output.

If for some reason you wanted to reuse this annoying tone throughout a script, you could define it as a macro

Set "BEL=Echo/| CHOICE /N 2> nul"
%BEL%