pw-cat:tldr:75734
This command is using the "pw-cat" utility with a few options and arguments. Here is an explanation of each component:
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"pw-cat": It is the command being executed. This utility is typically used to manipulate and process audio files.
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"--record": This option indicates that the utility should record audio. It tells "pw-cat" to perform a recording operation.
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"--rate=${6000}": It sets the sample rate for the recording. A sample rate determines the number of samples taken per second during audio recording. In this case, it is set to 6000 samples per second.
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"${filename-wav}": This is an argument passed to the command, specifying the filename (without the extension) of the WAV audio file to be recorded. The value is likely provided by the user or a script. The actual filename would be something like "filename.wav".
Overall, this command instructs the "pw-cat" utility to record audio at a sample rate of 6000 samples per second, saving the recording in a file with the provided filename.