## Name avol - Change system sound volume ## Synopsis ```**sh $ avol [-m] [-M] [volume] ``` ## Description This program is used to control the AudioServer volume and muted state. ## Options * `-m`: Mute all audio. * `-M`: Unmute all audio. ## Examples ```sh # Set the volume to 100 $ avol 100 Volume: 100 # Get the current volume $ avol Volume: 80 # Mute all audio $ avol -m # Unmute all audio $ avol -M ```