您可以使用 AppleScript 执行此操作:
set volume with output muted
delay 5
set volume without output muted
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osascript 允许您从 shell 运行 AppleScript:
osascript -e "set volume with output muted" -e "delay 5" -e "set volume without output muted"
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'5' 是延迟的秒数。