A simple command-line mixer for PulseAudio. More information: <https://github.com/cdemoulins/pamixer>.

• List all sinks and sources with their corresponding IDs:
  pamixer --list-sinks --list-sources
• Set the volume to 75% on the default sink:
  pamixer --set-volume 75
• Toggle mute on a sink other than the default:
  pamixer --toggle-mute --sink ID
• Increase the volume on default sink by 5%:
  pamixer --increase 5
• Decrease the volume on a source by 5%:
  pamixer --decrease 5 --source ID
• Use the allow boost option to increase, decrease, or set the volume above 100%:
  pamixer --set-volume 105 --allow-boost
• Mute the default sink (use `--unmute` instead to unmute):
  pamixer --mute

© tl;dr; authors and contributors