amixer: read commands from file #320
Description
There is problem with limited buffer size for option --stdin 256 bytes. It can be eliminated by reading commands from file, where we know size in advance. Moreover, it can be more convenient than --stdin option and will be drastically faster than trying to execure command-by-command from shell script. It would be very useful for devices with complex audio initialization. If you approve this idea, let me create a PR