Exec runs a command and returns its exit code:
Now then, the moment HotAudio’s player commanded the browser to begin playback, the hook snapped shut. The audio element, this, was grabbed and stored. mockToString ensured the hook was invisible to integrity checks.
，更多细节参见夫子
Chris Damant/Bernwood Ecology，推荐阅读一键获取谷歌浏览器下载获取更多信息
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