[linux-audio-dev] How does one alter the main mixer volume (or any other mixer level) in ALSA from a command line (via a simple system call)?

[Josh Green]

On Wed, 2003-03-05 at 21:02, Ivica Bukvic wrote:
> Hi all,
> 
> I have this small question:
> 
> Is it possible (I presume it is) to alter mixer settings in Alsa by
> invoking some kind of a system call using shell (i.e. how the RME hdsp
> can have its stuff altered)?
> 
> If so, what is the range of values that describe the loudest and softest
> levels?
> 
> Finally, are these levels standardized?
> 
> Any help on this matter is greatly appreciated! Thank you! Sincerely,
> 
> Ico
> 
> P.S. Apologies for cross-posting.

I believe amixer is what you want. It comes in the alsa-utils package.
BTW this is probably off topic for alsa-devel, though I'm sure you are
forgiven :) Cheers.
	Josh Green