pw-play:tldr:ae6c6
The given command "pw-play --volume=${0-1} ${filename-wav}" is used to play an audio file with a specified volume level.
Let's break down the command:
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"pw-play": This is the main command that specifies the audio playback operation.
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"--volume=${0-1}": This option is used to set the volume level for the audio playback. The "${0-1}" is a variable expression that represents a number between 0 and 1. It means you can specify any value between 0 and 1 for the volume level. For example, "--volume=0.5" will set the volume to half of the maximum level.
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"${filename-wav}": This is a placeholder for the name of the audio file you want to play. You need to replace it with the actual name of the WAV file you want to play. It should include the file extension as well (e.g., "audio.wav").
So, when you execute the command with the actual values, it will play the specified audio file with the desired volume level.