How do I bind two different keyboard keys to the system mute function?

Question

So, I want to bind two different keyboard keys to the system mute function. I go to system settings > keyboard > shortcuts > sound and media and find the Volume Mute setting and enter the second shortcut I want for it. However, this deletes the first shortcut. How can I bind two keys to this function?

Answer 1

It is quite easy to do such a thing if you know the command for doing that function.
If you are using ALSA sound driver, the commands are :

amixer set Master mute` for muting the system

    "amixer set Master unmute" for unmuting the system  
    "amixer set Master toggle" for toggling volume.  
    "amixer set Master <vol>" to set volume level to <vol>

So, in the Keyboard shortcut option, click on Add and in the Command box, enter the functionality that you want.
Hope this helps.