Linux: Control Sound Level with Command Line

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In Linux, you can run a command to control sound volume.

# increase sound level
amixer sset Master 8%+

# decrease sound level
amixer sset Master 8%-

# set to specific sound level
amixer sset Master 50%
# show a text gui mixer control panel
alsamixer scontrols

This is particularly useful if you want to setup keys to increase/decrease sound level.

For how to set up keys, see Linux: Keyboard Tools for Key Layout, Keymapping, Keybinding ⌨.

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