evtone is a command-line program that plays tones on any beeper device on Linux, such as your PC speaker or the pwm-beeper module.
Unlike 'beep' or similar tools, evtone only supports outputting SND_TONE events to devices you'll find in /dev/input. No attempt to play tones through the connected terminal or to single tone hardware is supported.
How do I use it?
Copy and pasted from evtone --help:
Usage: evtone [OPTION...] TONE [TONE...]
TONE is of the format HZ:MILLISECONDS
Up to 256 TONEs may be specified at once.
-d, --dry-run Print what the program will do
-D, --device=FILE /dev/input device to use to play tones
If not supplied the device will be guessed
-?, --help Give this help list
--usage Give a short usage message
-V, --version Print program version
Mandatory or optional arguments to long options are also mandatory or optional
for any corresponding short options.
"evtone 440:1500" plays a tone of 440Hz for 1500 milliseconds.
"evtone 440:1500 300:10" plays a 440Hz tone for 1500 milliseconds
followed by a 300Hz tone for 10 milliseconds
"evtone -d 440:1500 300:10" will print what the program will do
instead of actually doing it
"evtone -D /dev/input/event2 440:1000" will play a 440Hz tone for
1000 milliseconds using the /dev/input/event2 device
Here's some example happy beeps you can try:
$ evtone 220:100 275:100 330:100 440:100 550:100 660:100 880:200
You need the following to build and run this software:
- Linux kernel
- GCC (for building only)
- Meson (for building only)
To build and run with Meson use these commands:
$ meson setup build
$ cd build
If you really dislike Meson, you can build with just GCC like this:
$ gcc evtone.c -o evtone
Make sure to run this after checking out:
git config blame.ignoreRevsFile .git-blame-ignore-revs
There's always new stuff to add to software. Some future ideas for evtone:
- Find bugs (I'm sure they're there!)
evtone is licensed under the MIT license.