amixer

Amixer is a command-line tool that is used to control the volume settings of sound devices in Linux systems. It stands for ALSA (Advanced Linux Sound Architecture) Mixer. The amixer tool allows users to adjust volume levels of different sound components such as master volume, individual playback channels, and capture channels. It supports various options and parameters to manipulate sound settings, such as changing volume levels, muting/unmuting channels, querying for volume information, and switching audio outputs. Amixer is primarily used in command-line interfaces or scripts to automate audio configurations, making it useful for system administrators or advanced users. It communicates with the underlying sound system through the ALSA API, providing a flexible and reliable way to manage audio settings. With amixer, users can modify sound settings for different audio devices, including sound cards, onboard audio, USB audio interfaces, or HDMI audio outputs. The tool can be used to fine-tune volume levels, balance audio channels, or assign different output devices for multimedia playback. Amixer also offers the ability to control other audio properties, such as bass, treble, or headphone amplification, depending on the available hardware features. It provides a clear and concise display of the current audio settings and available controls, making it easy to understand and manipulate the volumes. In addition to its basic functionality, amixer integrates well with other utilities and tools, enabling users to create complex audio setups or integrate audio control within custom scripts or applications.