pacmd

List sinks (outputs)

$ pacmd list-sinks

$ pacmd list-sources

$ pacmd set-default-sink [sink_name]

$ pacmd set-sink-volume [sink_name] [65536]

$ pacmd move-sink-input [index] [sink_name]

$ pacmd

pacmd [command]

pacmd is a command-line tool for reconfiguring PulseAudio at runtime. It provides full access to PulseAudio's internal configuration and state.
Running without arguments enters interactive mode with tab completion.

list-sinks

List output devices.

List input devices.

List playback streams.

Set default output.

Set volume.

Move stream.

Exit interactive mode.

PulseAudio specific. Use pactl for simpler operations. Changes may not persist across restarts. Consider PipeWire migration.

pacmd is part of PulseAudio, developed by Lennart Poettering starting in 2004 as a next-generation sound server.

pactl(1), pulseaudio(1), pavucontrol(1)