arecord:tldr:3a462

The command arecord --list-devices is used to list the audio input devices available on a computer system.

arecord is a command-line audio recorder and player for Linux systems. It is part of the Advanced Linux Sound Architecture (ALSA) project, which provides audio and MIDI functionality to Linux.

The option --list-devices is used to display a list of available audio devices. When this command is executed, it will output information about each device, including its index number, name, and supported sample formats and rates.

This command is useful for checking the available audio input devices on a system, such as microphones or line inputs, and can be used to determine the device name or index number to specify when recording audio with arecord.