Install:

Install:

  sudo aptitude install pavucontrol

  sudo aptitude install pulseaudio pulseaudio-utils pavucontrol

Control:

Control:

  bash -c 'pactl -- set-sink-volume `pacmd list-sinks | grep -P -o "(?<=\* index: )[0-9]+"` -10%'

  bash -c 'pactl -- set-sink-volume `pacmd list-sinks | grep -P -o "(?<=\* index: )[0-9]+"` -10%'