For people like me who cannot live without listening to music, controlling volume level and different channels are crucial tasks. In Linux console for everything (up to now that I am using it) there is a replacement of GUI. There are many applications available to control volume in text-mode as well.
Here, I just want to introduce one which I like it and is very handy and that’s amixer
. Amixer is a simple text-mode mixer control which allows you to control volume level.
Using it is really simple, here I put some example of how to use it.
$ amixer
Shows all available channels.
$ amixer set Master 0
Set master channel to zero. Bear in mind that master should be written with capital M
.
$ amixer set Master 5+
Increases 5 level of the master channel volume. Again be careful about the place of +
sign.
$ amixer set Master 5-
Decreases 5 level of the master channel volume. More information is available in man page of Amixer.